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Radda [10]
3 years ago
13

450 people are randomly selected at grocery stores across the state and surveyed on the amount of money they are spending at the

store that day. How does finding the sample variance compare to investigating the sampling distribution of the variance?
A.Since the state has at least 450 grocery stores, finding the variance of the sample is the same as investigating the sampling distribution of the variance.

B.The sampling distribution of the variance requires repeating this process with the same sample several times. So this does not compare to the sampling distribution of the variance.

C. Only 450 people are selected from all the shoppers, so the distribution is not even.

D.The sampling distribution of the mean requires multiple samples to be compared. However, in this situation you are looking for the variance, so finding the sample variance is the same as investigating the sampling distribution of the variance.
Mathematics
1 answer:
____ [38]3 years ago
3 0

Answer:

Step-by-step explanation:

Sample variance when large number of samples are drawn we have tend to become a normal distribution.

Variance of the sample is different since variance

Var(x) = E(x^2)-{E(x)}^2

is the formula used for finding the variance of any sample.

But sampling distribution of variance requires repeating this process with the different samples several times.

So option A is not right

B is also not correct, C is wrong

D.The sampling distribution of the mean requires multiple samples to be compared. However, in this situation you are looking for the variance, so finding the sample variance is the same as investigating the sampling distribution of the variance.

is correct

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Step-by-step explanation:

Answer: 16 and 5/4 tbsp of sugar.

7 ÷ 2 = 3.5

Don't worry about the decimal for now, just find how many tbsp of sugar she needs for 6 tbsp of milk.

6 ÷ 2 = 3

3 x 5 = 15

Now, we will focus in the 0.5 tbsp of milk.

Find how much 1/2 a tbsp of milk can get for sugar.

4 1/2 tbsp of milk is 5 tbsp of sugar.

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(Answer for Part A)

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Pls help is it a b or c <br> will give brainliest btw
Lelu [443]

Answer:

The answer is C. Annie didn't make a mistake.

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3 0
3 years ago
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17% of students in a class have brown hair. If 6 students are chosen at random, what is the probability that exactly 3 have brow
dezoksy [38]

Answer:

6.8%

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2 years ago
The figure below shows the design of a truss to support the weight of a roof. In this truss design, ∠A⩭∠D and ĀF⩭DF.
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Answer:

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Step-by-step explanation:

In the question, we're given \angle A\cong \angle D. Therefore, the measure of these two angles must be equal.

To find the value of x, set these two angles equal to each other:

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Since \angle A was labelled as 4x-26, substitute x=14 to find its measure:

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<h3>How to determine the range?</h3>

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