In a study of radio listening habits, a station owner would like to estimate the average number of hours that teenagers spend listening each day. If it is reasonable to assume that = 1.3 hours, how large a sample size is needed to be 90% confident that the sample mean is off by at most 30 minutes?
______________

Question

In a study of radio listening habits, a station owner would like to estimate the average number of hours that teenagers spend listening each day. If it is reasonable to assume that  = 1.3 hours, how large a sample size is needed to be 90% confident that the sample mean is off by at most 30 minutes?
______________

Quizplus · Accepted Answer

The Answer of In a study of radio listening habits, a station owner would like to estimate the average number of hours that teenagers spend listening each day. If it is reasonable to assume that  = 1.3 hours, how large a sample size is needed to be 90% confident that the sample mean is off by at most 30 minutes?
______________

In a Study of Radio Listening Habits, a Station Owner