Tornadoes cause many deaths each year in the United States. The order values for the yearly number of deaths for the 54 years 1950 through 2003 are:

15, 24, 25, 27, 28, 30, 30, 31, 32, 33, 34, 34, 36, 39, 39, 39, 40, 43, 44, 46, 50, 51, 52, 53, 53, 55, 58, 59, 60, 64, 66,67, 67, 69, 70, 73, 73, 83, 84, 89, 94, 94, 98, 114, 122, 129, 130, 131, 159, 193, 230, 301, 366, 519

(a) Calculate the first quartile (Q1), the median (Q2) and the third quartile (Q3), and show the values of the "five-number summary". Then construct a Boxplot. For this question, note that theQ1is the [(n+ 1)0.25]th position, median is the [(n+ 1)0.5]th position, andQ3is the [(n+ 1)0.75]th position.

(b) Determine the intervals ofxsandx2s.