Millionaires. Refer to Problem 20. The ages of the 36 millionaires sampled are arranged in increasing order in the following table.

31 38 39 39 42 42 45 47 48 48 48 52 52 53 54 55 57 59 60 61 64 64 66 66 67 68 68 69 71 71 74 75 77 79 79 79

a. Determine the quartiles for the data.

b. Obtain and interpret the interquartile range.

c. Find and interpret the five-number summary.

d. Calculate the lower and upper limits.

e. Identify potential outliers, if any.

f. Construct and interpret a boxplot.