Over the years many changes have been made in the U.S. Social Security System.

(a) Do research and determine the number of people receiving Social Security benefits for the years 1945, 1950, 1955, 1960, . . . , 2015. Then construct a frequency distribution and histogram of the data.

(b) Determine the maximum amount that self-employed individuals had to pay into Social Security (the FICA tax) for the years 1945, 1950, 1955, 1960, . . . , 2015. Then construct a frequency distribution and a histogram of the data.