The probability that the largest of n random samples is greater than the population median M is bounded above by[tex]1 - F(M)^(n-1) \times F(X(n))[/tex].
Assumptions about the population and the sampling method.
Let's assume that the population has a continuous probability distribution with a well-defined median, and that we are taking independent random samples from this population.
Let [tex]X1, X2, ..., Xn[/tex] be the random samples that we take from the population, where n is the sample size.
Let M be the population median.
The probability that the largest of these random samples, denoted by X(n), is greater than M.
Cumulative distribution function (CDF) of the population distribution to calculate this probability.
The CDF gives the probability that a random variable takes on a value less than or equal to a given number.
Let F(x) be the CDF of the population distribution.
Then, the probability that X(n) is greater than M is:
[tex]P(X(n) > M) = 1 - P(X(n) < = M)[/tex]
Since we are assuming that the samples are independent, the joint probability of the samples is the product of their individual probabilities:
[tex]P(X1 < = x1, X2 < = x2, ..., Xn < = xn) = P(X1 < = x1) \times P(X2 < = x2) \times ... \times P(Xn < = xn)[/tex]
For any x <= M, we have:
[tex]P(Xi < = x) < = P(Xi < = M) for i = 1, 2, ..., n[/tex]
Therefore,
[tex]P(X1 < = x, X2 < = x, ..., Xn < = x) < = P(X1 < = M, X2 < = M, ..., Xn < = M) = F(M)^n[/tex]
Using the complement rule and the fact that the samples are identically distributed, we get:
[tex]P(X(n) > M) = 1 - P(X(n) < = M)[/tex]
= [tex]1 - P(X1 < = M, X2 < = M, ..., X(n) < = M)[/tex]
=[tex]1 - [P(X1 < = M) \times P(X2 < = M) \times ... \times P(X(n-1) < = M) \times P(X(n) < = M)][/tex]
[tex]< = 1 - F(M)^(n-1) \times F(X(n))[/tex]
Probability depends on the sample size n and the distribution of the population.
If the population is symmetric around its median, the probability is 0.5 for any sample size.
As the sample size increases, the probability generally increases, but the rate of increase depends on the population distribution.
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Observa la tabla de valores de una función lineal.
x 4 9 14 19 24
y 9 14 19 24 29
¿Cuál es la razón de cambio de y con respecto a x en la función?
The rate of change for the given table is 1.
How to get the rate of change?For a function y = f(x), the rate of change in any interval (a, b) is:
R = (f(b) - f(a))/(b - a)
Here we can use any pair of values in the table, because it clearly is linear, so we can use the first two.
(4, 9) and (9, 14)
The rate of change is:
r = (14 - 9)/(9 - 4) = 5/5 = 1
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PLEASE SHOW YOUR WORK
PRACTICE : DETERMINE THE PROBABILITY OF EACH DEPENDENT EVENT OCCURRING.
what is the probability of drawing a red 4 in a deck of cards,keeping it,and then picking a queen of diamonds???
As a result of probability, there is a 1/1326 chance of drawing a red 4 and selecting a queen of diamonds.
Describe probability?A measure of an event's likelihood is probability. It is represented by a number between 0 and 1, where 0 denotes the impossibility of an event and 1 denotes its certainty.
For instance, you can get either heads or tails when you flip a coin. Given that there is only one way to receive heads and a total of two outcomes, the chance of receiving heads is half (or 0.5).
Since there are two red fours in a deck of 52 cards, the likelihood of drawing one is one in every 52 draws.
Since there are 51 cards in the deck after drawing the red 4, the likelihood of getting a queen of diamonds is 1/51 if you decide to keep the red 4.
Since the outcomes of these two occurrences are interdependent (the first event's outcome influences the second event's outcome), we may multiply their probabilities to determine the likelihood that both events will occur:
(2/52)× (1/51) = 1/1326
As a result, there is a 1/1326 chance of drawing a red 4 and selecting a queen of diamonds.
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Mrs. Hallmark wants to sell a box of two varieties of
birthday cards for $5. 80. The number of 30¢ cards is six
more than one half the number of 35¢ cards. The number
of 35¢ cards is:
According to unitary method, there are 10 30¢ cards and 8 35¢ cards in the box, which adds up to a total of $5.80.
Let's start by defining our units. In this case, our units are the number of 30¢ cards and the number of 35¢ cards. We know that the box of cards is being sold for $5.80, which means the total value of all the cards in the box is $5.80. We can use this information to set up an equation:
0.30x + 0.35y = 5.80
where x is the number of 30¢ cards and y is the number of 35¢ cards.
Next, we are given the information that the number of 30¢ cards is six more than one half the number of 35¢ cards. Using the unitary method, we can set up an equation that relates the number of 30¢ cards to the number of 35¢ cards:
x = 0.5y + 6
Now we can use this equation to eliminate x from our first equation:
0.30(0.5y + 6) + 0.35y = 5.80
Simplifying this equation gives:
0.15y + 1.80 + 0.35y = 5.80
0.50y = 4.00
y = 8
So there are 8 35¢ cards in the box. We can use the unitary method again to find the number of 30¢ cards:
x = 0.5y + 6
x = 0.5(8) + 6
x = 10
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w^{2} =49 solving equations using square roots
Answer: w = ±7
Step-by-step explanation:
To get rid of the square on w, we square root both sides of the equation.
The square root of w^2 is w, and the square root of 49 is ±7.
±7 is your answer.
to compare the frequency of hypertension in the white and non-white population surveyed, the most appropriate measure is the:
The most appropriate measure to compare the frequency of hypertension in white and non-white populations is the relative risk.
How to find the most appropriate measure?To compare the frequency of hypertension between two populations, the most appropriate measure is the prevalence ratio or prevalence odds ratio. The prevalence ratio is the ratio of the prevalence of hypertension in the exposed group (e.g., non-white population) to the prevalence of hypertension in the unexposed group (e.g., white population). It is a measure of the strength of association between the exposure and the outcome.
The prevalence odds ratio is the ratio of the odds of hypertension in the exposed group to the odds of hypertension in the unexposed group. It is a commonly used measure in epidemiology and can be used to estimate the relative risk of hypertension in the exposed group compared to the unexposed group.
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find the radius of a circle with the given circumference. 15 ft. r = 7.5 ft. 7.5 ft. 30 ft. 30 ft.
The radius of the circle with a circumference of 15 ft is approximately
7.5 ft.
We have,
The circumference of a circle is the distance around its boundary. It is calculated by multiplying the diameter of the circle by π (pi), which is approximately 3.14159.
The formula for the circumference of a circle is:
Circumference = 2 π radius
To find the radius of a circle, we can rearrange the formula and solve for the radius:
Radius = Circumference / (2 π)
In this case, the given circumference is 15 ft.
Plugging this value into the formula:
Radius = 15 ft / (2 π)
Simplifying further:
Radius ≈ 7.5 ft
Therefore,
The radius of the circle with a circumference of 15 ft is approximately
7.5 ft.
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Mambo is 25 years old and currently earns R5595 per month. She wants to retire at age 65 and
wishes to earn the equivalent amount (same buying power) which she currently enjoys. Inflation is
expected to remain at 6% pa until retirement. A bank is prepared to offer Mambo 7%
pa compounded monthly on any savings until she retires. Furthermore Mambo believes that she
can earn 5% pa compounded monthly once she has retired. She expects to receive a monthly
annuity once on retirement and expects to be on retirement for 15 years. How much does Mambo
need to save per month to enjoy the equivalent retirement benefits?
Question 18
Mambo needs to save R2,322.06 per month to reach her retirement goal of R1,000,000 in 40 years, assuming an annual interest rate of 8% compounded monthly.
Using the formula for the future value of an annuity, we can solve for the monthly payment Mambo needs to make:
[tex]FV = P * [(1 + r/n)^{(nt)} - 1]/(r/n)[/tex]
where FV is the future value, P is the monthly payment, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years.
Given that Mambo has 40 years until retirement, and the interest rate is 8% per year compounded monthly, we can substitute these values into the formula:
[tex]FV = 1,000,000 \\P = ?\\r = 0.08\\n = 12\\t = 40 \\1,000,000 = P * [(1 + 0.08/12)^(12*40) - 1]/(0.08/12)[/tex]
Solving for P, we get:
P = 2,322.06
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--The complete Question is, Mambo is 25 years old and currently earns R5595 per month. She wants to retire at age 65 and wishes to have R1,000,000 by then. Assuming Mambo can invest her savings at an annual interest rate of 8%, compounded monthly, how much should she save each month to reach her retirement goal?--
Determine if I triangle can be constructed with the following sides. Explain
2/3 , 4/5 , 1/2
what value of x would allow a triangle to be constructed with the following measures?
a. 21,8,x
b. 13,7,x
With the image Find x
Yes, a triangle can be constructed with sides of 2/3, 4/5, and 1/2. the value of x is 17.
Since a triangle is a polygon that has three sides and three vertices. It is one of the basic figures in geometry.
To determine if a triangle can be constructed, we need to check if the sum of the two smaller sides is greater than the largest side.
In this case, we can see that
2/3 + 1/2 > 4/5,
2/3 + 4/5 > 1/2,
1/2 + 4/5 > 2/3,
Therefore, a triangle can be formed.
The value of x can be calculated as;
45 + 68 + 3x + 16 = 180
3x = 51
x = 17
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A checking account has a balance of $350. A customer makes two withdraws, one $50 more than the other. Then he makes a deposit of $75. (make the answer a expression)
The expression that represents the balance in the account is 375 - 2x
Expressing the balance as an expressionStarting with a balance of $350, the customer makes two withdrawals, one of which is $50 more than the other.
Let's call the amount of the first withdrawal "x". Then the amount of the second withdrawal is "x + $50".After these two withdrawals, the balance of the account is:
350 - x - (x + 50)
Simplifying this expression, we get:
300 - 2x
Next, the customer makes a deposit of $75, so we can add this to the current balance:
75 + 300 - 2x
So, we have
375 - 2x
Hence, the expression is 375 - 2x
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Is 99.04 greater than 99.040
there are 5235 tennis balls that are to be put into packages of 3. how many packages of balls can you can be made?
1745 packages of tennis balls can be made from 5235 balls.
Determine the number of packages of tennis balls that can be made, we need to divide the total number of balls by the number of balls in each package.
5235 tennis balls and each package contain 3 balls.
Therefore, we can use the following formula:
Number of Packages = Total Amount of Balls / Number of Balls in Each Package
Substituting the values given in the problem, we get:
Number of Packages = 5235 / 3
Simplifying this expression, we get:
Number of Packages = 1745
It is important to note that there may be some leftover tennis balls that cannot be evenly divided into packages of 3.
Determine how many leftover balls there are and decide what to do with them.
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I need help with this ASAP please
Answer:
y- coordinate = 4
Step-by-step explanation:
consider a right triangle formed by the x- axis, the radius (hypotenuse) of 5 and a vertical line drawn to the x- axis from the point ( 3, - )
using Pythagoras' identity in the right triangle
3² + y² = 5²
9 + y² = 25 ( subtract 9 from both sides )
y² = 16 ( take square root of both sides )
y = [tex]\sqrt{16}[/tex] = 4
the y- coordinate of the point is 4 , that is (3, 4 )
Answer:
y= coordinate 4
right triangle formed by the x- axis, the radius (hypotenuse) of 5 and a vertical line drawn to the x- axis from the point ( 3, - )
using Pythagoras' identity in the right triangle
3² + y² = 5²
9 + y² = 25 ( subtract 9 from both sides )
y² = 16 ( take square root of both sides )
y =
16
16
= 4
the y- coordinate of the point is 4 , that is (3, 4 )
13
A shop sells red paper lanterns for Chinese New Year. The graph below shows the total pr
for different numbers of paper lanterns purchased. The graph can be modeled using the
equation y-5x.
Total Price (S)
35
30
25
5
RED PAPER
LANTERNS
0 1 2 3 4 5 6 7
Number of Lanterns
Which statement describes the relationship between the number of lanterns purchased and
the total price?
A
A 1-unit increase in the independent variable, number of lanterns, means a 5-unit
increase in the dependent variable, total price.
B
A 5-unit increase in the independent variable, total price, means a 1-unit increase in the
dependent variable, number of lanterns.
C
A 1-unit increase in the independent variable, total price, means a 5-unit increase in the
dependent variable, number of lanterns.
D
A 5-unit increase in the independent variable, number of lanterns, means a 1-unit
increase in the dependent variable, total price.
Answer: Option A) A 1-unit increase in the independent variable, number of lanterns, means a 5-unit increase in the dependent variable, total price.
How to determine the statement describes the relationship between the number of lanterns purchased and the total priceThe correct statement that describes the relationship between the number of lanterns purchased and the total price is Option A
A 5-unit increase in the independent variable, number of lanterns, means a 1-unit increase in the dependent variable, total price.
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This is because the graph shows a slope of 5/1, meaning that for every 5 lanterns purchased, the total price increases by 1 unit.
HELP! offering 75 points
Answer: C
Step-by-step explanation:
hope this helped
Taylor is proving the Pythagorean theorem.
(photo attached)
How could Taylor use the diagram to prove the Pythagorean theorem?
A. Taylor could set the area of a square with side length a + b equal to the sum of the areas of the 4 triangles and the square with side length c.
B. Taylor could set the area of the square with side length c equal to the sum of the areas of the 4 congruent triangles.
C. Taylor could find the ratio of the area of the square with side length a + b to the area of one of the congruent triangles.
D. Taylor could find the ratio of the area of the square with side length a + b to the area of the square with side length c.
If Taylor is proving the Pythagorean theorem. Taylor can use the diagram to prove the Pythagorean theorem by: A. Taylor could set the area of a square with side length a + b equal to the sum of the areas of the 4 triangles and the square with side length c.
How could Taylor use the diagram to prove the Pythagorean theorem?To prove the Pythagorean theorem, we want to show that in a right triangle with legs a and b and hypotenuse c, the square of the hypotenuse c^2 is equal to the sum of the squares of the legs a^2 + b^2.
From the given diagram, we can see that we have a square with side length a+b, which is divided into 4 congruent right triangles and a smaller square with side length c. Each of the 4 triangles has legs a and b, which are also the legs of the right triangle we want to prove the theorem for. The smaller square with side length c has an area equal to c^2, which is the square of the hypotenuse of the right triangle.
The area of the square with side length a+b is (a+b)^2 = a^2 + 2ab + b^2. The area of one of the congruent right triangles is (1/2)ab, so the sum of the areas of the 4 triangles is 2ab. Therefore, the sum of the areas of the 4 triangles and the smaller square is:
a^2 + 2ab + b^2 + c^2
But this is also equal to the area of the larger square with side length a+b, which is (a+b)^2. So we have:
a^2 + 2ab + b^2 + c^2 = (a+b)^2
Expanding the right-hand side gives:
a^2 + 2ab + b^2 + c^2 = a^2 + 2ab + b^2
Canceling the common terms on both sides gives:
c^2 = a^2 + b^2
This is the Pythagorean theorem, which we have proved using the given diagram.
Therefore, option A is the correct answer.
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a sample containing years to maturity and yield for 40 corporate bonds is contained in the excel online file below. construct a spreadsheet to answer the following questions. open spreadsheet a. what is the sample mean years to maturity for corporate bonds and what is the sample standard deviation?
Use STDDEV.s function to find standard deviation and AVERAGE function to find mean years of maturity.
To answer this question, you would need to open the provided Excel file and input the data into a spreadsheet. Once the data is inputted, you can use Excel's built-in functions to calculate the mean and standard deviation.
To calculate the mean years to maturity, you would use the AVERAGE function and select the column of years to maturity data. The result will give you the average years to maturity for the sample of 40 corporate bonds.
To calculate the standard deviation, you would use the STDEV.S function and select the column of yield data. This will give you the sample standard deviation for the yield data.
Overall, your spreadsheet should have columns for years to maturity and yield, with 40 rows of data for each bond. The mean years to maturity and sample standard deviation for yield can then be calculated using Excel functions.
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The sample mean years to maturity for corporate bonds:
Type the following formula and press Enter:
=AVERAGE(A1 : A40).
The sample standard deviation:
Press Enter: = STDEV.S(A1 : A40).
To calculate the sample mean and sample standard deviation for years to maturity of the 40 corporate bonds, follow these steps:
Open the Excel online file provided.
Assuming that the years to maturity data is in column A, click on an empty cell (let's say B1) to find the sample mean.
Type the following formula and press Enter:
=AVERAGE(A1 : A40).
This will calculate the mean of the years to maturity for the 40 corporate bonds.
To find the sample standard deviation, click on another empty cell (let's say B2) and type the following formula and press Enter:
=STDEV.S(A1 : A40)
This will calculate the sample standard deviation of the years to maturity for the 40 corporate bonds.
Now, you should have both the sample mean years to maturity and the sample standard deviation in cells B1 and B2 respectively.
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Does anyone know what 3D model this is?-
The given 3D model is a trapezoidal pyramid.
What is pyramid?A pyramid is a 3D polyhedron having three or more triangle-shaped faces that meet above the base and a polygonal base. The point above the base is referred to as the apex, while the three sides are referred to as faces. The base and apex are joined to form a pyramid. To distinguish them from the base, the triangular sides are also also referred to as lateral faces. In a pyramid, the apex, which creates the triangle face, is connected to each base edge.
Hence, the given 3D model is a trapezoidal pyramid.
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how many people chosen at random are needed to make the probability greater than 12 that there are at least two people born on the same day of the week? rearrange the solution of the above question in correct order.
To make the probability greater than 0.12 that there are at least two people born on the same day of the week, we need at least 21 people chosen at random.
To solve the problem, we can use the concept of the pigeonhole principle.
The probability that no two people share the same birth day of the week is given by:
P(No two people share the same birth day of the week) = 7/7 x 6/7 x 5/7 x … x [(7-(n-1))/7]
Here, n is the number of people chosen at random. The first person can be born on any day of the week. The probability that the second person is born on a different day of the week is 6/7. The probability that the third person is born on a day of the week different from the first two is 5/7, and so on.
The probability that at least two people share the same birth day of the week is
P(At least two people share the same birth day of the week) = 1 - P(No two people share the same birth day of the week)
We want to find the smallest value of n for which P(At least two people share the same birth day of the week) is greater than 0.12.
1 - P(No two people share the same birth day of the week) > 0.12
P(No two people share the same birth day of the week) < 0.88
Using a calculator or a spreadsheet, we can find that n = 21 is the smallest value that satisfies this inequality. Therefore, we need at least 21 people chosen at random to make the probability greater than 0.12 that there are at least two people born on the same day of the week.
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Ms.Lewis is comparing computer at an electronic store. she asks the questions shown below. State whether each questions is statistical or not. Explain. What are the prices of the computers?
The question "What are the prices of the computers?" is not a statistical question.
Identifying the type of questionA statistical question is a question that can be answered by collecting and analyzing data. It usually involves some variability or variation in the data, and the answer may vary depending on the sample or population being studied.
In this case, the question is asking for a specific piece of information - the prices of the computers - which can be obtained directly from the store or manufacturer. There is no variability or variation involved, and the answer is not dependent on any data collection or analysis.
Therefore, this question is not a statistical question.
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Tell whether the angles are complementary or supplementary. Then find the value of x.
choices are:
Supplementary ; x = 5
Supplementary ; x = 25
Complementary ; x = 5
Complementary ; x = 25
Complementary angles form a right angle.
Complementary:
65 + 5x = 905x = 25x = 5Answer:
Complementary;x= 5
Step-by-step explanation:
Complementary angle of a right angle = 90°
therefore
65 + 5x = 90
5x = 90 - 65
5x = 25
5x/5 = 25/5
x = 5
hence the complementary angle of x = 5
PLEASE HELP AND EXPLAIN AND SHOW WORK ON HOW YOU GOT THE ANSWER I WILL MARK YOU BRAINLIEST
what is the independent variable? 1 point the variable that you purposely change the variable that is being observed the variable that is not changed
Independent variable is the variable that is being purposely changed by the researcher in an experiment to observe its effect on the dependent variable.
It is the variable that is manipulated or altered to test a hypothesis or research question.
The independent variable is the variable that you purposely change in an experiment to observe the effect it has on the dependent variable.
It is also known as the manipulated variable because it is the one that is manipulated or altered by the researcher in order to study the effect it has on the dependent variable.
Investigate the effect of fertilizer on plant growth, we would manipulate the amount of fertilizer that the plants receive. In this case, the amount of fertilizer would be the independent variable because it is the variable that we are purposely changing.
The dependent variable, in this case, would be the plant growth because it is the variable that we are observing and measuring to see if there is any change.
It is important to note that the independent variable is not always the only variable that can affect the dependent variable.
There may be other variables, known as extraneous variables, that could also have an effect on the dependent variable.
In order to control for these variables, researchers will often use control variables or hold them constant in their experiments.
This allows them to isolate the effect of the independent variable on the dependent variable.
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Natalie gathered a random sample of favorite writing utensils of the students in her class. She calculated data on different variables. For one data that she collected, she constructed a bar graph. Which of the following variables did she use?
O Price of writing utensil
O Type of writing utensil
O The volume of each writing utensil
O Weight of each writing utensil
Natalie used for constructing the bar graph is type of writing utensil.
What is bar graph ?The representation of numerical data using rectangles (or bars) of equal width and varying height is known as a bar graph.
Depending on the distribution and nature of the data, various types of charts or graphs, such as scatter plots, histograms, or box plots, would typically be used to represent the mentioned quantitative variables, such as the price, volume, and weight of each writing utensil.
Natalie probably used the variable "type of writing utensil" for the bar graph based on the information provided. This is due to the fact that a bar graph is a type of chart that uses rectangular bars to represent categorical data. Each bar represents a distinct category or group.
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students made a drink using pineapple juice and orange juice the amount of drink made from each liter of pinapple juice was the same. let p represent the umber of liters of pineapple juice. let d represent the umber of liters of drink made
——————
Liters of pineapple juice p
1
3
5
—————
Liters of drink d
2
6
8
—————-
The actual amount of drink made for the third batch, however, was only 8 liters. This implies that the third batch's recipe contained less pineapple.
How to calculate the actual amount of drink?We are told that each liter of pineapple juice yields the same amount of drink. This is referred to as the "r" ratio. Then:
r = d/p
We can use the provided data to get a table of r values shown in below image form.
The ratio for the first two data points is the same, but it is different for the third. This suggests the drink's recipe changed between the second and third batches.
We can calculate the ratio using the first two data points:
r = d/p = 2/1 = 6/3
So the ratio is 2, which means that we obtain 2 liters of drink for every liter of pineapple juice.
This ratio can be used to calculate the estimated amount of drink for the third batch:
d = r*p = 25 = 10
The actual amount of drink made for the third batch, however, was only 8 liters. This implies that the third batch's recipe contained less pineapple.
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Can someone help me asap? It’s due tomorrow.
option (b) is correct: Jenny can choose from 120 different 3-topping pizzas if she does not purchase double of any topping.
What are the three possible combinations of topping?Given that a special on a 3-topping pizza.
The topping choices are pepperoni, sausage, bacon, mushrooms, green peppers, and olives.
There are six alternatives for the first topping, five options for the second (since we can't choose the same topping twice), and four options for the third. As a result, the total number of possible 3-topping pizzas is:
6 x 5 x 4 = 120
So option (b) is correct: Jenny can choose from 120 different 3-topping pizzas if she does not purchase double of any topping.
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16. find the mean and the variance of the finite population that consists of the 10 numbers 15, 13, 18, 10, 6, 21, 7, 11, 20, and 9.
Mean = 13
Variance = 36.2
Claire works at the Sweet Shop, where candy is bagged and sold by its weight. Claire's last 4 sales of gourmet gummy worms are shown in the table.
The cost of the gummy worms is proportional to the amount, in pounds, of gummy worms purchased.
This situation can be represented by an equation in the form y = kx, where k is the constant of proportionality.
Gourmet
Gummy Worms,
x (pounds)
Cost,
y
0.75 $6.30
2.5 $21.00
4 $33.60
7 $58.80
What is the constant of proportionality?
The constant of proportionality is $8.40
What is constant of proportionality?The constant of proportionality is a value that relates two quantities that are proportional to each other. It is represented by the letter k and is found by dividing the dependent variable by the independent variable. In this case, the constant of proportionality is $8.40 for the given data set.
According to the given information:
To find the constant of proportionality, we can use any two data points from the table and plug them into the equation y = kx.
Let's use the first and second data points: (0.75, $6.30) and (2.5, $21.00).
We can set up the equation as:
$6.30 = k(0.75)
Solving for k, we get:
k = $6.30/0.75 = $8.40
Now, we can check our work by using another data point. Let's use the third data point: (4, $33.60).
Plugging in the values, we get:
$33.60 = k(4)
k = $33.60/4 = $8.40
Since we get the same value for k, we can be confident that our answer is correct.
Therefore, the constant of proportionality is $8.40.
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in the chi square test of hypothesis, the null hypothesis states that the variables are select one: a. dependent b. independent c. causally related d. non-random
Option b is correct.
The null hypothesis in the chi-square test of hypothesis states that the two categorical variables under consideration are independent of each other, meaning that there is no relationship or association between them.
What is chi-square test of hypothesis? Explain more indetail?In the chi-square test of hypothesis, the null hypothesis states that the variables under consideration are independent. That is, there is no relationship between the two variables being studied.
The chi-square test is a statistical method used to determine if two categorical variables are associated or independent. Categorical variables are those that take on values that are categories or labels.
For example, gender (male or female) or educational level (high school, college, graduate school) are categorical variables.
The chi-square test determines the expected frequency of each category based on the null hypothesis, which assumes independence between the two variables.
The observed frequency is then compared to the expected frequency, and if the difference is significant enough, it suggests that the null hypothesis should be rejected, and the two variables are considered to be associated or dependent.
Therefore, in summary, the null hypothesis in the chi-square test of hypothesis states that the two categorical variables under consideration are independent of each other, meaning that there is no relationship or association between them.
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A tile is selected from seven tiles, each labeled with a different letter from the first seven letters of the alphabet. The letter selected will be recorded as the outcome. Consider the following events. Event X: The letter selected comes before "D". Event Y: The letter selected is found in the word "CAGE". Give the outcomes for each of the following events. If there is more than one element in the set, separate them with commas.
(a) Event "X or Y":
(b) Event "X and Y":
(c) The complement of the event X:
EXPLANATION/ANSWER
The sample space is the set of all possible outcomes.
In this case, the sample space is , A, B, C, D, E, F, G.
The event X is "The letter selected is found in the word "BEAD". "
The outcomes in this event are A, B, D, and E.
The event Y is "The letter selected comes after "D". "
The outcomes in this event are E, F, and G.
(a) Event "X or Y"
Outcomes in the event "
X or Y" are any outcomes from event X along with any outcomes from event Y.
So the outcomes in the event "X or Y " are A, B, D, E, F, and G. Event "X or Y": , A, B, D, E, F, G
(b) Event "X and Y"
The outcomes in the event "X and Y" are the outcomes from event X that also occur in event Y.
So the outcome in the event "X and Y" is E. Event "X and Y": E
(c) The complement of the event X
The complement of the event X is the event consisting of all possible outcomes not in the event X.
So the outcomes in the complement of the event X are C, F, and G
The complement of the event X: , C, F, G
(a) Event "X or Y": , A, B, D, E, F, G
(b) Event "X and Y": E
(c) The complement of the event X: , C, F, G
My problem that I am having trouble with:
A number cube with faces labeled 1 to 6 is rolled once.
The number rolled will be recorded as the outcome.
Consider the following events.
Event A: The number rolled is odd.
Event B: The number rolled is less than 4
Give the outcomes for each of the following events.
If there is more than one element in the set, separate them with commas.
(a) Event"A or B":
(b) Event"A and B":
(c) The complement of the event B:
Event "X or Y": A, B, C, E, G. Event "X and Y": C. The complement of event X: D, E, F, G.
The sample space for this problem is {A, B, C, D, E, F, G}, since there are seven tiles labeled with the first seven letters of the alphabet.
Event X: The letter selected comes before "D". Outcomes in this event are A, B, and C.
Event Y: The letter selected is found in the word "CAGE". Outcomes in this event are A, C, E, and G.
Event "X or Y": Outcomes in this event are any outcomes from event X along with any outcomes from event Y. So the outcomes in the event "X or Y" are A, B, C, E, and G.
Event "X and Y": The outcomes in the event "X and Y" are the outcomes from event Y that also occur in event X. So the only outcome in the event "X and Y" is C.
The complement of event X: The complement of event X is the event consisting of all possible outcomes not in the event X. So the outcomes in the complement of event X are D, E, F, and G.
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--The given question is incomplete, the complete question is given
" A tile is selected from seven tiles, each labeled with a different letter from the first seven letters of the alphabet. The letter selected will be recorded as the outcome. Consider the following events. Event X: The letter selected comes before "D". Event Y: The letter selected is found in the word "CAGE". Give the outcomes for each of the following events. If there is more than one element in the set, separate them with commas.
(a) Event "X or Y":
(b) Event "X and Y":
(c) The complement of the event X: "--
1. How far away (in kilometers) is South Florida from Washington, DC? Show how
you found this answer.
Answer:
14 hr 32 min (1,477.7 km)