You are interested in finding a 90% confidence interval for theaverage number of days of class that college students miss eachyear. The data below show the number of missed days for 14 randomlyselected college students. Round answers to 3 decimal places wherepossible. 1 8 10 9 1 3 1 8 1 0 2 1 5 8 a. To compute the confidenceinterval use a distribution. b. With 90% confidence the populationmean number of days of class that college students miss is betweenand days. c. If many groups of 14 randomly selected non-residentialcollege students are surveyed, then a different confidence intervalwould be produced from each group. About percent of theseconfidence intervals will contain the true population mean numberof missed class days and about percent will not contain the truepopulation mean number of missed class days.
