Consider the following data from a random sample: 23 12 26 14 20 25 14 11 21 14 25 21 22 21 8 19 17 22 17 16
a.) Construct a stem-and-leaf plot and specify the five-number index (min, Q1, Q2, Q3, & max)
b.) Compute the mean and the standard deviation
c.) Find a 95% confidence interval for the population mean.