Samples of DNA are collected, and the four DNA bases of A, G, C, and T are coded as 1, 2, 3, and 4, respectively. The results are listed below. Construct a

95%

confidence interval estimate of the mean. What is the practical use of the confidence interval?

1,

1,

2,

3,

4,

3,

4,

3,

3,

2

Question content area bottom

Part 1

What is the confidence interval for the population mean

?

<<

(Round to one decimal place as needed.)

Part 2

What is the practical use of the confidence interval? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice.

A.

The confidence interval can be used to estimate that, with

95%

confidence, the interval from

enter your response here

to

enter your response here

actually contains the true mean DNA base of all people.

(Round to one decimal place as needed.)

B.

The given numbers are just substitutes for the four DNA base names, so the numbers do not measure or count anything, and they are at the nominal level of measurement. The confidence interval has no practical use.

C.

The confidence interval can be used to estimate that

95%

of all people have DNA bases between

enter your response here

and

enter your response here.