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 15 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 12 15 28 13 22 7 23 26 13 5 21 7 5 25 distribution. b. With 90% confidence the population mean number of visits per physical therapy patient is between( ) and( ) visits.