Question

A survey was conducted that asked 1009 people how many books they had read in the past year. Results indicated that x overbarx =12.1 books and s equals=16.6 books. Construct a 90​% confidence interval for the mean number of books people read. Interpret the interval.

Construct a 90​% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice.

​(Use ascending order. Round to two decimal places as​ needed.)

A. If repeated samples are​ taken,90​% of them will have a sample mean between    and    .

B. There is 90​% confidence that the population mean number of books read is between    and .

C. There is a 90​% chance that the true mean number of books read is between and .

Answer 1

The statistical software output for this problem is:

Hence,

Option B; 11.24; 12.96