Question

1. During the past year, on the average 214 books were checked out daily from the public library in Stucco, Wyoming. This year, the city fathers of Stucco have attempted to increase circulation through various promotions such as bookmobiles, youth programs, and visits to local organizations. In order to evaluate their efforts, they have taken a random sample of 60 days of the current year and calculated the mean number of books checked out daily--241--and the standard deviation--12. Based on these data, test the hypothesis (99% confidence level) that the daily circulation of books has not increased.

Answer 1