What is the RANGE of the data set below (0.2,0.8,0.4,0.3,0.4,0.4,0.4,0.8,1.4)

The probability that a student chosen at random is left-handed is 40%

From the given two-way table, we can see that the total number of left-handed students is:

10 + 14 = 24

And the total number of students is:

20 + 10 + 14 + 16 = 60

Therefore, the probability that a student chosen at random is left-handed is:

P(left-handed) = 24/60

Simplifying this fraction by dividing both the numerator and the denominator by 12, we get:

P(left-handed) = 2/5

P(left-handed) ≈ 0.40 or 40.%

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State, AAA rated and High tech firm bonds have maturity of 10years, 5years and 3 years respectively.

Bond is a financial instrument that represents a debt obligation. When you purchase a bond, you are essentially lending money to the issuer (which can be a government, corporation, or other entity) in exchange for regular interest payments and the repayment of the principal amount at a specified future date, known as the maturity date.

1. Maturity of Each Bond Group:

- State bonds: The state bonds have a maturity of 10 years.

- AAA rated bonds: The AAA rated bonds have a maturity of 5 years.

- High tech firm bonds: The high tech firm bonds have a maturity of 3 years.

2. Coupon Rates:

- State bonds: The state bonds have a 5% coupon rate.

- AAA rated bonds: The AAA rated bonds have a 6.5% coupon rate.

- High tech firm bonds: The coupon rate is not provided for the high tech firm bonds.

3. Par Values:

- State bonds: The par value of each state bond is not mentioned.

- AAA rated bonds: The par value of each AAA rated bond is not mentioned.

- High tech firm bonds: The par value of each high tech firm bond is $500.

4. Municipal Bonds:

Based on the given information, there is no mention of Sylvester purchasing any municipal bonds. Therefore, none of Sylvester's new investments are municipal bonds.

5. Corporate Bonds:

- High tech firm bonds: The high tech firm bonds are issued by a high tech firm, which indicates that they are corporate bonds.

6. Standard & Poor's Consultation:

From the information provided, there is no specific indication as to which bond purchase Sylvester consulted Standard & Poor's for.

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The 95% confidence interval for the population mean μ is (18.3, 21.7).

Given: n = 100, σ2 = 64, X-bar = 20, and the desired level of confidence is 95%.

We can use the formula for the confidence interval for the population mean when the population standard deviation is known:

CI = X-bar ± Zα/2 * σ/√n

where CI is the confidence interval, Zα/2 is the critical value from the standard normal distribution for the given level of confidence, σ is the population standard deviation, and n is the sample size.

Since the level of confidence is 95%, we have α = 0.05 and Zα/2 = 1.96.

Substituting the given values, we get:

CI = 20 ± 1.96 * 8/√100

Simplifying the expression, we get:

CI = (18.3, 21.7)

Therefore, we can be 95% confident that the true population mean μ lies between 18.3 and 21.7 based on the given sample data.

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Answer:

x = 21

Step-by-step explanation:

if RSTV ≈ WXYZ

then 5x - 2 = 103

5x = 103 + 2 = 105

x = 105/5 = 21

The value of

1. BC = 12.04

2. angle B = 50°

3. angle C = 50°

Pythagoras theorem states that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse

c² = a² + b²

BC is the hypotenuse

c² = 8² + 9²

c² = 64+81

c² = 145

c = √145

= 12.04

TanB = opp/adj

tanB = 6/8

tanB = 0.75

B = 40( nearest degree)

angle C = 90- 40

C = 50°

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Answer:

8.875 km

Step-by-step explanation:

1km = 1000 metres

so 8875 metres = 8875/1000 = 8.875 X 1km = 8.875km

Answer: 8,875 metres= 8.875 kilometres

Tanisha would expect to earn 180 on a day when she waits on 10 tables.

Tanisha's guaranteed wage is 40 per day. This means that no matter what happens during her shift, she will earn at least 40.

In addition to her guaranteed wage, Tanisha earns money from tips. She earns about 14 in tips for each table she waits on. If Tanisha waits on 10 tables in a day, she can expect to earn:

14 x 10 = 140

Therefore, her total earnings for the day would be:

40 (guaranteed wage) + 140 (tips) = 180

So Tanisha would expect to earn 180 on a day when she waits on 10 tables.

It's important to note that Tanisha's tips may vary from day to day depending on factors such as the size of the party, the generosity of the customers, and the overall volume of business at the restaurant. However, based on past experience, she can reasonably expect to earn around 14 in tips for each table she waits on.

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To prove the equation [tex]\frac{1}{\tan(2\theta) - \tan(\theta)} - \frac{1}{\cot(2\theta) - \cot(\theta)} = \cot(\theta)[/tex] we'll simplify the left side, this is shown below:

Using the trigonometric identities [tex]\tan(2\theta) = \frac{2\tan(\theta)}{1 - \tan^2(\theta)}[/tex] and [tex]\cot(\theta) = \frac{1}{\tan(\theta)}[/tex]

We can rewrite the expression as [tex]\frac{1}{\tan(\theta)(1 - \tan(\theta))} - \frac{\tan(\theta)}{\tan(\theta)(1 - \tan^2(\theta))}[/tex]

Combining the fractions with a common denominator, we obtain [tex]\frac{1 - \tan(\theta)}{\tan(\theta)(1 - \tan(\theta))}[/tex]

Simplifying further, we cancel out the [tex](1 - tan(\theta))[/tex] terms, leaving us with [tex]\frac{1}{\tan(\theta)}[/tex] = [tex]\cot(\theta)[/tex], which is equivalent to the right side of the equation.

Thus, the equation is proven.

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In diagram A, the axis of symmetry will be vertical and has rotational asymmetry. In diagram D, the axis of symmetry will be horizontal.

Axial symmetrical is similarity around an axis; an item is internally symmetric if it retains its appearance when turned around an axis.

Rotational symmetry is a property of an object or a figure that remains unchanged when it is rotated about a fixed point by an angle less than 360 degrees.

In diagram A, the axis of symmetry will be vertical and has rotational asymmetry.

In diagram D, the axis of symmetry will be horizontal.

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The answer is A) i.e. Both will increase.

If the point in the upper left corner of the Explanatory variable versus the Response variable scatterplot is removed, the correlation (r) and the slope of the line of best fit (b) will change.

In a data graph or dataset you're dealing with, an outlier is a data point that is unusually high or unusually low in comparison to the closest data point and the rest of the nearby coexisting values. if the point is an outlier, removing it will increase the correlation (r) and the slope of the line of best fit (b).

Therefore, the answer is A) Both will increase.

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Given question is incomplete, the complete question is below

If the point in the upper left corner of the Explanatory variable versus the Response variable scatterplot shown below is removed, what will happen to the correlation (r) and the slope of the line of best fit (b) ?

Possible answers

A) Both will increase

B) r will increase and b will decrease

C) They will not change

D) r will decrease and b will increase

E) Both will decrease

You would end up paying 43.75% of the original price based on the clearance percent.

Here's how to calculate it:
- Start with the original price. Let's call it 100%.
- The clearance items have been marked down by 25%, so you're now paying 75% of the original price (100% - 25% = 75%).
- The sale is offering an additional 55% off the clearance price. To calculate the final percentage, you need to multiply the current percentage (75%) by the discount percentage (55%), and then subtract that from the current percentage.
- So, 75% x 55% = 41.25%. Subtract that from 75%: 75% - 41.25% = 33.75%.
- This means that you'll end up paying 33.75% of the original price.
- However, we need to remember that we started with 100%, so we need to calculate what percentage 33.75% is of 100%.
- To do this, we divide 33.75 by 100, and then multiply by 100 to get the percentage: (33.75/100) x 100 = 33.75%.
- Therefore, you end up paying 43.75% of the original price (100% - 25% - 41.25% = 33.75%, which is 43.75% of 100%).

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Thus,  the critical t-score for a 99% confidence interval with a sample size of 35 individuals is 2.728.

To calculate the critical t-score for a 99% confidence interval with a sample size of 35 individuals, we first need to determine the degrees of freedom (df) using the formula (n-1). In this case, df = 34.

Next, we need to find the t-value for the upper and lower tails of the distribution. Since we are looking for a 99% confidence interval, we need to divide the significance level (alpha) by 2 to get 0.005 for each tail.

Using a t-distribution table or calculator with 34 degrees of freedom and a probability of 0.005 in each tail, we find the critical t-value to be approximately 2.728.

Therefore, the critical t-score for a 99% confidence interval with a sample size of 35 individuals is 2.728.

This means that if we calculate the sample mean and construct a confidence interval using this t-value, we can be 99% confident that the true population mean falls within that interval.

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Answer:

Step-by-step explanation:

We must divide the frequency of F grades by the total number of pupils in the class to get the likelihood that a student would receive an F.

The frequency distribution being what it is:

Level: A B C D F

28 35 56 14 7 times each year

You can determine the total number of pupils by adding the frequencies:

Students total: 28 + 35 + 56 + 14 + 7 = 140.

We can now determine the probability:

P(F) = Number of students overall / Frequency of F grades

P(F) = 7 / 140 P(F) = 0.05

As a result, the likelihood that a student will receive a F is 0.05, or 5%.

The set of all two-letter strings can be thought of as an ordered pair of two letters, where each letter can be selected from the alphabet {a, b, ..., z}.

Since there are 26 letters in the alphabet, there are 26 choices for the first letter in the string. For the second letter, however, there are only 25 choices, since we cannot repeat the letter selected for the first position. Thus, the number of different two-letter strings is the product of the number of choices for each letter, which is 26 * 25 = 650.

This problem illustrates the concept of counting principles, specifically the product rule of counting. The product rule states that the total number of outcomes for a sequence of events is the product of the number of outcomes for each event. In this case, the two events are the selection of the first letter and the selection of the second letter. By applying the product rule, we can easily determine the total number of possible two-letter strings.

This type of problem is commonly encountered in combinatorics, which is the branch of mathematics concerned with counting and arranging objects. The ability to count and calculate the number of possible outcomes is important in many fields, including probability theory, statistics, and computer science.

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Answer: Correct.

Step-by-step explanation:

2.8 Kg is 2800 grams

Each day birds eat 125 grams, 125x7 = 875 grams in a week.

If we divide the 875 grams which is that total feed in a week to 2800 our total feed, we will find the argument is correct or not.

2800/875 = 3,2

So it is correct.

Step-by-step explanation:

Garden area = L x W = sqrt (30 *8) = sqrt (240)

Pond area = L x W = sqrt (2 *6) = sqrt (12)

Percentage of the garden that is pond:

   pond area / garden area   x 100%

          sqrt (12) / sqrt(240)   x 100%  =  sqrt (1/20)   x100% = 22.36 %

We are given a sample of n=712 20 29 year old men, with a sample mean weight of 183 pounds. We are also told that the population standard deviation is 40 pounds.

To calculate the confidence interval, we use the formula

Zα/2 is the critical value of the standard normal distribution at a significance level of α/2, σ is the population standard deviation, and n is the sample size.

The critical value of the standard normal distribution at a 90% confidence level is 1.645. Plugging in the provided values, we get:

CI = 183 1.645 * (40/√712)

CI = [179.86, 186.14]

This means we can be 90% confident that the true population mean weight of 20 29 year old men lies within the range of 179.86 to 186.14 pounds.

In summary, based on the sample of 712 men and the given population standard deviation of 40 pounds, we can estimate the population mean weight with 90% confidence to be between 179.86 and 186.14 pounds.

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The scenario that the sample means differ more is Scenario 1 because the mean seems to be very far from each other.

The scenario that there is a larger variation in the distribution of data within each sample is Secnario 2

The f statistics is larger for Scenario 1 as the Means are far and the spread is less so the F statistic will be larger.

Scenario 1 as F statistic will be larger. So chances of Rejecting H0 is more.

The F statistic is a statistical measure used to determine if there is a significant difference between the means of two or more groups. It is calculated by dividing the between-group variability (also known as the mean square between) by the within-group variability (also known as the mean square error).

The scenario that there is a larger variation in the distribution of data within each sample is Secnario 2 because for this scenario there seems to be more spread within each sample.

Lastly,  Scenario 1 as F statistic will be larger. So chances of Rejecting H0 is more.

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Answer:

3√5

Step-by-step explanation:

Hence, the square root of 45 can be expressed as, √45 = √(9 × 5) = 3√5. 45 is not a perfect square, hence, it remains within roots. The simplified radical form of the square root of 45 is 3√5.

The value of tan F in this right-angled triangle is approximately 3.42857.

In the right-angled triangle DEF, with a right angle at E, we are given the length of the perpendicular DE, which is 24 cm, and the length of the base EF, which is 7 cm.

To find the value of tan F, we can use the tangent function, which is defined as the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

In this case, F is the angle opposite to side DE, and the adjacent side is EF. So, we can write:

tan F = DE / EF

Substituting the given values, we have:

tan F = 24 cm / 7 cm

Now, we can divide 24 by 7:

tan F ≈ 3.42857

So, the value of tan F in this right-angled triangle is approximately 3.42857.

This means that the ratio of the length of the perpendicular side DE to the length of the base side EF is approximately 3.42857. It indicates how steep or inclined the line EF is with respect to the line DE in the triangle DEF.

Remember that tangent is a trigonometric function that relates the angles of a right triangle to the lengths of its sides. In this case, we used it to find the ratio of the sides in the triangle and determine the value of tan F.

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If Leslie had invested the initial $22,000 in an account that paid an average of 9.11% interest compounded daily for 10 years, it would grow to approximately $56,300.

b. If Leslie had taken the money from part a and invested it in a CD that paid an average of 4% compounded daily for the remaining 21 years, it would grow to approximately $135,300.

c. If Leslie deposited $750 each year into an account that paid 4.09% compounded annually for 31 years, he would have approximately $49,600.

d. The total gain from the three accounts would be approximately $158,200.

e. Leslie invested $22,000 in the Nomad.

f. Leslie gained $39,000 on the Nomad investment (selling price of $61,000 minus the initial investment of $22,000 and the yearly investments of $23,250 over 31 years).

g. The CD account that paid an average of 4% compounded daily was the most conservative investment since it provided a lower rate of return compared to the other accounts. The other accounts had higher risk due to fluctuations in interest rates and market conditions.

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The set of all points in a plane that are closer to point P than to point Q is the interior of a circle.

To understand why this is the case, imagine drawing two circles centered at P and Q with radii equal to the distance between P and Q. These circles will intersect at two points, which we'll call A and B. Any point outside of these two circles will be closer to either P or Q than the other point.

Now, imagine drawing a third circle centered at the midpoint of segment AB with a radius equal to half the distance between P and Q. This circle will contain all the points that are closer to P than to Q. To see why, imagine drawing a line tangent to this circle at point A. Any point on the same side of this line as P will be closer to P than to Q. Similarly, any point on the opposite side of this line as Q will be closer to P than to Q.

In conclusion, the set of all points in a plane that are closer to P than to Q is the interior of a circle centered at the midpoint of segment PQ with a radius equal to half the distance between P and Q.

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Answer:

450 students

Step-by-step explanation:

Therefore, The area between y=2x and y=2√x is approximately 0.3333 (rounded to four decimal places).

To find the area between y=2x and y=2√x, we'll first need to find the points of intersection between the two functions. Next, we'll integrate the difference between the functions over the interval of intersection.
Step 1: Find the points of intersection:
Set the functions equal to each other: 2x = 2√x
Divide by 2: x = √x
Square both sides: x^2 = x
Rearrange to find x: x^2 - x = 0
Factor: x(x - 1) = 0
So the points of intersection are x = 0 and x = 1.
Step 2: Integrate the difference between the functions:
Integral(2√x - 2x)dx from 0 to 1
Step 3: Calculate the area:
Area = ∫[2√x - 2x]dx from 0 to 1
= [4/3 * x^(3/2) - x^2] evaluated from 0 to 1
= (4/3 * 1^(3/2) - 1^2) - (4/3 * 0^(3/2) - 0^2)
= (4/3 - 1) - 0
= 1/3

Therefore, The area between y=2x and y=2√x is approximately 0.3333 (rounded to four decimal places).

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There are 21 different ways to award the 5 prizes among the 7 contestants for the combinations.

Two ideas in combinatorics are combinations and permutations. Permutations are arrangements where the order is important, whereas combinations are a choice of elements when the order is irrelevant. Combinations involve selecting a subset, whereas permutations entail putting a group of things in a specific order.

We'll use the concept of combinations. In a contest with 7 contestants and 5 prizes to be awarded, you want to determine the number of ways to choose 5 winners from the 7 contestants.

You can use the formula for combinations: [tex]C(n, r) = n! / (r!(n-r)!)[/tex] where n is the total number of contestants (7 in this case) and r is the number of prizes (5 in this case).

Step 1: Calculate[tex]n![/tex] ([tex]7![/tex]in this case)
[tex]7![/tex] = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5,040

Step 2: Calculate[tex]r
[tex]5![/tex] = 5 × 4 × 3 × 2 × 1 = 120

Step 3: Calculate [tex](n-r)![/tex] ([tex]2![/tex] in this case)
[tex]2![/tex]= 2 × 1 = 2

Step 4: Apply the formula [tex]C(n, r) = n! / (r!(n-r)!)[/tex]
C(7, 5) = 5,040 / (120 × 2)
C(7, 5) = 5,040 / 240
C(7, 5) = 21

There are 21 different ways to award the 5 prizes among the 7 contestants.

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The volume of the sphere is  0. 52 ft³

To determine the volume, we need to know the formula

Hence, the formula that is used for calculating the volume of a sphere is expressed as;

V = 4/3 πr³

Such that the parameters of the formula are;

Substitute the values, we have that;

Volume = 4/3 ×3.14 × 0.5³

Find the cube value

Volume = 4/3 × 3.14 × 0.125

Multiply the values

Volume = 1.57/3

Divide the values

Volume = 0. 52 ft³

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The number of ways to select 6 pieces of candy from a bag containing 14 pieces can be calculated using the combination formula. There are 3003 different ways to select six pieces of candy from a bag containing 14 pieces.

which is:

nCr = n! / (r! * (n-r)!)

where n is the total number of candies in the bag (14), and r is the number of candies to be selected (6).

Using this formula, we get:

14C6 = 14! / (6! * (14-6)!)
= 3003

Therefore, there are 3003 ways to select 6 pieces of candy from a bag containing 14 pieces.

To determine the number of ways six pieces can be selected from a bag containing 14 pieces of candy, you can use the concept of combinations. Combinations are used when the order of selection does not matter.

The formula for combinations is:
C(n, r) = n! / (r!(n-r)!)

In this case, n = 14 (total pieces of candy) and r = 6 (number of pieces to be selected).

Using the formula:

C(14, 6) = 14! / (6!(14-6)!)

C(14, 6) = 14! / (6! * 8!)

Now, calculate the factorials:

14! = 14 * 13 * 12 * 11 * 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1
6! = 6 * 5 * 4 * 3 * 2 * 1
8! = 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1

Then, substitute the factorials back into the equation:

C(14, 6) = (14!)/(6! * 8!)

C(14, 6) = (87178291200)/(720 * 40320)

Finally, divide the numerator by the denominator:

C(14, 6) = 3003

So, there are 3003 different ways to select six pieces of candy from a bag containing 14 pieces.

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Answer:

[tex]\frac{3}{2}[/tex]

Step-by-step explanation:

as x → 1 , the denominator = 2x - 2 = 2(1) - 2 = 2 - 2 = 0

this means the expression is undefined

simplify the expression by factoring numerator and denominator

x³ - 1 ← is a difference of cubes and factors in general as

a³ - b³ = (a - b)(a² + ab + b²) , then

x³ - 1

= x³ - 1³ ( with a = x and b = 1 )

= (x - 1)(x² + x + 1)

2x - 2 = 2(x - 1)

rewriting the expression

lim x → 1 [tex]\frac{(x-1)(x^2+x+1)}{2(x-1)}[/tex] ← cancel (x - 1) on numerator/ denominator

lim x → 1 [tex]\frac{x^2+x+1}{2}[/tex]  ( substitute x = 1 )

limx→ 1 [tex]\frac{1+1+1}{2}[/tex] = [tex]\frac{3}{2}[/tex]

When we evaluate the expression lim x → 1 | x³ - 1 | / (2x - 2), the result obtained is 3/2

First, we shall express x³ - 1 in factor from. This is illustrated below:

x³ - 1 = x³ - 1³ => Difference of cubes

Thus, we have:

x³ - 1 = (x - 1)(x² + x + 1)

Next, we shall express 2x - 2 in factor form. Details below:

2x - 2

2 is common in both terms

Thus,

2x - 2 = 2(x - 1)

Finally, we shall evaluate lim x → 1 |x³ - 1| / (2x - 2). This is shown below:

|x³ - 1| / (2x - 2) = [(x - 1)(x² + x + 1)] / 2(x - 1)

Cancel out (x - 1)

|x³ - 1| / (2x - 2) = (x² + x + 1) / 2

As x tends to 1, we have

|x³ - 1| / (2x - 2) = (1² + 1 + 1) / 2

|x³ - 1| / (2x - 2) = 3 / 2

Thus, we can conclude that the evaluation of lim x→1 |x³ - 1| / (2x - 2) is 3/2

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The laptop will be worth $594.48 in two years.

To find the value of the laptop in two years, we need to substitute the given values into the formula:

Value = P x (1 - r)ⁿ

In this case, the original value of the laptop is $700, and it depreciates at a rate of 0.08 per year (which is 8% expressed as a decimal). We want to find the value in two years, so t = 2.

Substituting the values into the formula:

Value = $700 x (1 - 0.08)²

Value = $700 x (0.92)²

Value ≈ $700 x 0.8464

Value ≈ $594.48

Therefore, the laptop will be worth $594.48 in two years.

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