The 2113 National Assessment of Educational ProgressNAEP gav

The 2113 National Assessment of Educational Progress(NAEP) gave a mathematics test to a random sample of twelfth-graders in Michigan. The mean score was 154 out of 300. To give a confidence interval for the mean score of all Michigan twelfth-graders, you would use

A. the two-sample t interval.

B. the matched pairs t interval.

C. the one-sample t interval.

Solution

The 2113 National Assessment of Educational Progress(NAEP) gave a mathematics test to a random sample of twelfth-graders in Michigan. The mean score was 154 out of 300. To give a confidence interval for the mean score of all Michigan twelfth-graders, you would use

A. the two-sample t interval.

B. the matched pairs t interval.

C. the one-sample t interval.

Answer: C. the one-sample t interval.

We are having only one group. So we have to use single sample t interval.