The point estimate of the population mean is 25 and the margin of error for the confidence interval is 2.04.
To determine the point estimate of the population mean, we take the midpoint of the interval.
Point estimate of population mean = (Lower bound + Upper bound) / 2 = (20 + 30) / 2 = 25
To calculate the margin of error, we need to know the level of confidence for the interval. Assuming a 95% confidence level, we can use the formula:
The margin of error = (Upper bound - Lower bound) / (2 * z-score)
Where the z-score for a 95% confidence level is 1.96.
Margin of error = (30 - 20) / (2 x 1.96) = 2.04
Hence, the population means point estimate is 25, and the confidence interval's margin of error is 2.04 percent.
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Calculator What is the surface area of this rectangular prism? O 110 in² O 180 in² O200 in² O220 in² 10 in. 5 in.
The surface area of the rectangular prism is 220 square inches
What is the surface area of the rectangular prism?From the question, we have the following parameters that can be used in our computation:
5 in by 10 in by 4 in
The surface area of the rectangular prism is calculated as
Area = 2 * (5 * 10 + 5 * 4 + 10 * 4)
Evaluate
Area = 220
Hence, teh area is 220 square inches
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i need answer for this +explanation i don't get it
Answer: 95 ft²
Step-by-step explanation:
To solve for the surface area, we will find the area of all the sides and then add them together. We see that we have a square as the base and 4 congruent triangles.
For the square:
A = LW
A = (5 ft)(5 ft)
A = 25 ft²
For one triangle:
A = [tex]\frac{BH}{2}[/tex]
A = [tex]\frac{(5\;ft)(7\;ft)}{2}[/tex]
A = 17.5 ft²
For all four triangles:
A = 17.5 ft² * 4 = 70 ft²
Total surface area by adding the triangles and square together:
70 ft² + 25 ft² = 95 ft²
[tex]4√3[/tex]what is equivalent to 4 sqrt 3
The equivalent expression to 4√3 is √48 or 6.928.
What is the equivalent expression?
An equivalent expression is an expression that has equal value to the original given expression.
From the given expression, we can determine its equivalent expression as follows;
The given expression = 4√3
We can square 4 and multiply it by 3 and enclose all with the square root.
4√3 = √(4² x 3 )
= √ ( 16 x 3 )
= √ ( 48 )
= 6.928
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A company produces two products: A and B. The relative market values at the split-off point are not available. For every $300,000 of joint costs, Product A produces 10,000 pounds, and Product B produces 40,000 pounds. The amount of joint costs allocated to Product B using the physical quantities method is $
The joint costs allocated to Product B is $240,000.
What is amount of joint costs allocated to Product B?We must allocate joint costs based on the relative physical quantities produced by each product.
The total physical quantity produced by both products is:
= Quantity of A + Quantity of B
= 10,000 + 40,000
= 50,000 pounds
We will calculate the proportion of physical quantity produced by product A:
= Quantity of B / Total physical quantity
= 40,000 / 50,000
= 0.8
The amount of joint costs allocated to Product B is will be
= Total joint costs x Proportion of
= $300,000 x 0.8
= $240,000.
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Morton made 42 out of 50 free throws last season. What percent of his free throws did Morton make? Morton made % of his free throws.
Answer: morton made 84% of his free throws.
Step-by-step explanation: 50 is half of 100
•multiply 42 by 2 because 50 is half of 100
Triangle XYZ is drawn with vertices X(4, −5), Y(6, −1), Z(10, −8). Determine the line of reflection if X′(4, 5).
y-axis
x-axis
y = 1
x = −4
The line of reflection is x-axis.
Given that, the triangle XYZ is drawn with vertices X(4, −5), Y(6, −1), Z(10, −8). we need to determine the line of the reflection if the X′(4, 5).
We know that the rule of the reflection over x-axis is
(x, y) → (x, -y)
Here, the y-intercept is changing its sign so we can say that the line of reflection is x-axis.
Hence, the line of reflection is x-axis.
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Use the order of operations
(-2 + 1)² + 5(12 ÷ 3) - 9.
Answer:
12
Step-by-step explanation:
PEMDAS (Parenthesis, exponents, multiplication/division, addition/subtraction
(-1)² + 5(4) - 9
1 + 5(4) - 9
1 + 20 - 9
=12
A spinner was spun 900 times using Spin Spinner on the TI-84
calculator, with 1 representing blue, 2 representing purple, 3
representing green, and 4 representing red as shown
what was the experimental
probability of landing on green?
a 23.80%
b 26.80%
C 22.80%
d 24.80%
The experimental probability of the spinner landing on green is calculated as follows:
p = Number of times that the number 3 was generated/900 x 100%.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
A green result is obtained when the number on the calculator is of 3, hence the experimental probability of the spinner landing on green is calculated as follows:
p = Number of times that the number 3 was generated/900 x 100%.
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what is the radius of this shape?
Answer 7/12
Step-by-step explanation:
Answer:
Step-by-step explanation:
The radius is the length from the center dot to the circle.
They gave you the radius
r=6 1/4 in
Need help looking for the area.
The area under the curve (since the function of the parabolic expression is y = x - x²) is 1/6 square units.
What is a parabolic expression?A parabolic function has an expression represented as f(x) = ax² + bx + c, which allows solving for x using either the factorization method or applying the quadratic formula. By zeroing out this expression, it becomes possible to determine its roots as with any quadratic equation.
In the case of the above function:
To find the area under the curve, above the x-axis, we need to integrate the parabolic expression from 0-1
that is:
∫[0,1](x-x²)dx
This is evaluated using the power rule
∫[0,1](x-x²)dx = [1/2x² - 1/3x³) fro x= 0 to x = 1
inserting the limits of the integration, we have:
[1/2 (1) ² - 1/3 ( 1) ³] - [1/2 (0)² - 1/3 (0) ³]
Simplified, and we have :
Area = 1/2 - 1/3
Thus, Area under the curve = 1/6
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K
In 2019, 2 out of every 5 members of an army reserve were female. There were 188,667 army reserve personnel that year. Estimate the number of
female members of the army reserve in 2019.
The approximate number of female members of the army reserve in 2019 was.
(Do not round until the final answer. Then round to the nearest whole number as needed.)
ew an example Get more help.
Clear all
Skill builder
Check answer
The approximate number of female members of the army reserve in 2019 was 75,467.
What is the number of female members in 2019?If 2 out of every 5 members of the army reserve were female, then the proportion of female army reserve personnel can be represented as:
= 2/5
= 0.4.
Now, we can multiply the proportion to total number of army reserve to get the number of female members which is:
= 0.4 x 188,667
= 75,466.80
= 75,467
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Math, some system by elimination
The elimination method is a technique used to solve linear equations that comprise a system. The fundamental principle behind this methodology involves nullifying one of the variables.
What is the elimination method about?It should be noted that to implement the elimination approach successfully, we must exclude either x or y, which can be accomplished by multiplying the second equation by an amount necessary to make the coefficient of y consistent in both the equations:
With x's value now discerned, we can insert it into any of the original equations to calculate y. This explains the method.
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Correct answer gets brainliest!! So please help!!
Answer:
b
Step-by-step explanation:just do it heh
Answer:
The Correct answer is D
the lower whiskers from 10 to 28
I am faster than the speed of
sound. I weigh nothing, but I
can fill a room. What am I?
folue the √(x-3) ³ - 64 equation √(ac-3)solve the equation
Solving the equation √(x - 3)³ - 64 = 0 for the variable x gives x = 19
Solving the equation for xFrom the question, we have the following parameters that can be used in our computation:
√(x - 3)³ - 64
Express as an equation
So, we have
√(x - 3)³ - 64 = 0
Add 64 to both sides of the equation
√(x - 3)³ = 64
Take the cube roots of both sides
So, we have
√(x - 3) = 4
Square both sides of the equation
This gives
x - 3 = 16
Add 3 to the equation
x = 19
Hence, the solution is x = 19
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The tree diagram shows the sample space for tossing a coin three times. Which of these shows all outcomes with exactly 2 heads?
The probability of tossing exactly 2 tails is 0.375.
We have,
A coin is tossed three times.
So, the outcomes can either be a head or a tail.
The possible outcomes when a coin is tossed three times are:
{HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}
Now, the Pr(tossing exactly 2 tails)
= 3/8
= 0.375
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M<2
Answers please the ask is in the picture
The graph to the right is the uniform probability density function for a friend who is x minutes late:
(a) Find the probability that the friend is between 10 and 30 minutes late.
(b) It is 10 A.M. and there is a 20% probability the friend will arrive within how many minutes?
David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period, 15 customers buy gasoline at this station. What is the probability that more than 8 and less than 12 customers pay in cash?
The probability that more than 8 and less than 12 customers pay in cash is 0.376 or 37.6%.
What is the probability?The probability that more than 8 and less than 12 customers pay in cash is calculated using the binomial probability formula:
P(x) = (n choose x) * p^x * (1-p)^(n-x)where:
n is the number of trials = 15
x = customers who pay in cash
p = paying in cash, which is 0.4 according to the problem
The probability that more than 8 and less than 12 customers pay in cash. is the sum of the probabilities of 9, 10, and 11 customers paying in cash.
Using the binomial probability formula:
P(x) = (15Cx) * 0.4 * (1 - 0.4)¹⁵⁻ˣP(9) = 15C₉ * 0.4⁹ * 0.6⁶
P(9) = 0.212
P(10) = 15C₁₀ * 0.4¹⁰ * 0.6⁵
P(10) = 0.121
P(11) = 15C₁₁* 0.4¹¹ * 0.6⁴
P(11)= 0.043
Hence;
P(9 or 10 or 11) = 0.212 + 0.121 + 0.043
P(9 or 10 or 11) = 0.376
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En una correctera tiene una longitud 65 millas
¿cuántos metros mide
esa carretera?
If the length of the road in miles is 65, then in meters is approximately 104607.1 meters.
To convert miles to meters, we need to use a conversion factor. There are 1609.34 meters in one mile. So, to convert 65 miles to meters, we can multiply 65 by 1609.34.
65 miles * 1609.34 meters/mile = 104607.1 meters
The units when making conversions. Miles and meters are units of length, but they are not the same. To convert from one unit to another, we need to use a conversion factor that relates the two units. In this case, we used the conversion factor of 1609.34 meters per mile to convert from miles to meters.
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Help solving
5/8 + 11/12 =
Answer:
37/24
Step-by-step explanation:
You have to find the common denominator.
URGENT!! ILL GIVE BRAINLIEST! ALONG WITH 100 POINTS!!!!!!!!
Match the given information with the equation for the line
-5x + 3y = -12
y = 3/2 x - 8
2y-x = -4
Y= -3/4x-2
Answer:
1. y = 3/2 x - 8
2. 2y-x = -4
3. y = -3/4x-2
4. -5x + 3y = -12
Find the values of x and y.
E
25
24
20
D
G
The value of x and y are 32.02 and 13.3 respectively.
What is Pythagoras theorem?Pythagoras theorem states that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse.
If a and b are the legs of the triangle and c is the hypotenuse, then,
c² = a²+b²
Triangle EFG is a right angled triangle so also triangle DEG
Therefore,
x² = 25²+20²
x² = 625 + 400
x² = 1025
x = √1025
x = 32.02
Also,
y² = 24² - 20²
y² = 576 - 400
y² = 176
y = √176
y = 13.3
Therefore the value of x and y is 32.02 and 13.3 respectively.
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Fill in the missing values to make the equations true.
The missing terms in the logarithmic equation are solved
Given data ,
Let the logarithmic equation be represented as A
Now , the value of A is
a)
log₄ 11 + log₄ 5 = log₄ ( a )
Now , the value of a is
From the logarithmic properties , we get
log A + log B = log AB
So , a = 11 + 5 = 16
b)
log₅ 3 - log₅ ( a ) = log₅( 3/5 )
From the logarithmic properties , we get
log A − log B = log A/B
So , a = 5
c)
log₇ 8 = 3 log₇ ( a )
From the logarithmic properties , we get
log Aⁿ = n log A
8 = 2³
So , a = 3
Hence , the logarithmic equation is solved
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If A is the set of numbers that are multiples of 8, B is the set of multiples of 4, and C is the set of multiples of 2, which of the following is the set of integers that will be in A but not B and C?
The set of integers that will be in A but not B and C will be 24, 32, 40,
How to explain the integerThe multiples of 8 comprise a set of {8, 16, 24, 32, 40, ...}, while the multiples of 4 correspond to {4, 8, 12, 16, 20, ...} and those of 2 are documented as {2, 4, 6, 8, 10, …}. The intersection of these two sets, B and C (B ∩ C = {4, 8, 12, 16, 20, ...}) remains unchanged.
It should be noted that to obtain the number of integers found in the multples of 8 that aren’t multiples either of 4 or 2, the intersection needs to be excluded from set A. This will yield {24, 32, 40, ...} - thus it is concluded that the integer set of multiples of 8, but not of 4 or 2, is {24, 32, 40, ...}
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I need help with this please
Given the triangle ABC at points A = ( 2, 2 ) B = ( 4, 5 ) C = ( 6, 3 ), and if the triangle is first reflected over the y axis, and then over the x axis, find the new point A''.
To reflect a point over the y-axis, we negate the x-coordinate of the point. To reflect the resulting point over the x-axis, we negate the y-coordinate of the point. So, to find the new point A'', we can perform these operations on the original point A:
1. Reflect A over the y-axis to get A': (-2, 2)
2. Reflect A' over the x-axis to get A'': (-2, -2)
Therefore, the new point A'' is (-2, -2).
HELP PLEASEE
Find the value of x to the nearest tenth of a unit.
Check the picture below.
[tex]\tan(18^o )=\cfrac{\stackrel{opposite}{x}}{\underset{adjacent}{18}} \implies 18\tan(18^o)=x \implies 5.8\approx x[/tex]
Make sure your calculator is in Degree mode.
A rectangular field is four times as long as it is wideIf the perimeter of the field is 300yards, what are the field's dimensions?
Answer:
Length = 120 yards, width = 30 yards.
Step-by-step explanation:
Lets use [tex]l[/tex] for length and [tex]w[/tex] for width.
The perimeter of a rectangular field is [tex]2l + 2w[/tex]. We can construct the following equations:
[tex]4w = l[/tex].
[tex]2l + 2w = 300.[/tex]
If we plug [tex]4w[/tex] in for [tex]l[/tex] into the second equation, we get:
[tex]2w + 2(4w) = 300.[/tex]
[tex]2w+8w = 300.[/tex]
[tex]10w = 300.[/tex]
[tex]w= 30.[/tex]
Plug 30 in for [tex]w[/tex] into the first equation.
[tex]l = 4*30 = 120.[/tex]
Length = 120 yards, width = 30 yards.
The 6-inch segment of tape stores 4608 bits of data and it is a portion of a tape reel that is 1200 feet long. How much data can be stored on the entire reel?
The data can be stored on the entire reel is 66,355,200 bits.
What is Unit Conversion?Conversion could appear difficult, but this tip will make it simple for you to convert any unit. The fundamental rule is to multiply when converting from a larger unit to a smaller unit. Divide if you need to go from a smaller to a larger unit.
We have,
The 6-inch segment of tape stores 4608 bits of data.
Now, length of of reel = 1200 feet
= 1200 x 12
= 14,400 inch
So, the data that can be stored in reel
= 14,400 x 4608
= 66,355,200 bits
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