You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 14 randomly selected physical therapy patients.

10

26

9

9

6

14

18

10

16

19

6

24

23

19

a. To compute the confidence interval use a?T OR Z distribution.

b. With95% confidence the population mean number of visits per physical therapy patient is between____and_____ visits.

c.If many groups of 14 randomly selected physical therapy patients are studied, then a different confidence interval would be produced from each group. About____percent of these confidence intervals will contain the true population mean number of visits per patient and about ______percent will not contain the true population mean number of visits per patient.