You are interested in finding a 90% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 14 randomly selected college students.Round answers to 3 decimal places where possible.

11, 8, 6, 10, 1, 0, 4, 8, 2, 10, 12, 10, 3, 7

a. To compute the confidence interval use a? z or t distribution.

b. With90% confidence the population mean number of days of class that college students miss is betweenanddays.

c.If many groups of 14 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. Aboutpercent of these confidence intervals will contain the true population mean number of missed class days and aboutpercent will not contain the true population mean number of missed class days.