You are interested in finding a 90% confidence interval for the average commute that non- residential students have to their college. The data below show the number of commute miles for 15 randomly selected non-residential college students. Round answers to 3 decimal places where possible. 28 10 21 10 28 18 21 16 21 19 20 22 14 11 13 a. To compute the confidence interval use at distribution. b. With 90% confidence the population mean commute for non-residential college students is

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