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The accompanying table gives the average high temperatures in January and July f

ID: 3238810 • Letter: T

Question

The accompanying table gives the average high temperatures in January and July for several cities in a certain continent. Write a

9595%

confidence interval for the mean temperature difference between summer and winter on that continent. Be sure to check the conditions for inference, and clearly explain what the interval means.

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Click the icon to view the temperatures.

Are the conditions for matched pairs inference satisfied? Select all that apply.

A.

No. It cannot be determined if the Independence Assumption is satisfied.

B.

No, the Paired Data Condition is not satisfied.

C.

Yes, all three conditions for matched pairs inference are satisfied.

D.

No, the Nearly Normal Condition is not satisfied.

E.

No, the Independence Assumption is definitely not satisfied.

The

9595%

confidence interval for the mean temperature difference between summer and winter is

left parenthesis nothing comma nothing right parenthesis,.

(Round to one decimal place as needed.)

Explain what this interval means. Choose the correct answer below.

A.

About

9595%

of all samples will have a mean that falls within this interval.

B.

There is a

9595%

chance that this interval captures the mean temperature difference between summer and winter of the sample.

C.

The true mean temperature difference between summer and winter falls in this interval

9595%

of the time.

D.

One can have

9595%

The accompanying table gives the average high temperatures in January and July for several cities in a certain continent. Write a 95% confidence interval for the mean temperature difference between summer and winter on that continent. Be sure to check the conditions for inference, and clearly explain what the interval means Click the icon to view the temperatures. D. No, the Nearly Normal Condition is not satisfied E. No, the Independence Assumption is definitely not satisfied. The 95% confidence interval for the mean temperature difference between summer and winter is (L L) (Round to one decimal place as needed.) Explain what this interval means. Choose the correct answer below. O A. About 95% of all samples will have a mean that falls within this interval C B. There is a 95% chance that this inte captures the mean temperature difference between summer and win of the sample O C The true mean temperature difference between summer and winter falls in this interval 95% of the time O D. One can have 95% confidence that this interval captures the true mean temperature difference between summer and winter.

Explanation / Answer

1) A. No. It cannot be determined if the Independence Assumption is satisfied.[hist(Jul-Jan) in r]

2) A. About 95% of all samples will have a mean that falls within this interval.

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