You are interested in finding a 90% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 12 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 21 25 7 7 16 9 14 17 18 18 8 8 b. With 90% confidence the population mean number of visits per physical therapy patient is between ? and ? visits.

Question

You are interested in finding a 90% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 12 randomly selected physical therapy patients. Round answers to 3 decimal places where possible.

21
25
7
7
16
9
14
17
18
18
8
8

b. With 90% confidence the population mean number of visits per physical therapy patient is between ? and ? visits.

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