4.51 ● The following data values are 2009 per capita expenditures on public libraries for each of the 50 U.S. states and the District of Columbia (from www.statemaster.com):

16.84 16.17 11.74 11.11 8.65 7.69 7.48 7.03 6.20 6.20 5.95 5.72 5.61 5.47 5.43 5.33 4.84 4.63 4.59 4.58 3.92 3.81 3.75 3.74 3.67 3.40 3.35 3.29 3.18 3.16 2.91 2.78 2.61 2.58 2.45 2.30 2.19 2.06 1.78 1.54 1.31 1.26 1.20 1.19 1.09 0.70 0.66 0.54 0.49 0.30 0.01

a. Summarize this data set with a frequency distribution. Construct the corresponding histogram.

b. Use the histogram in Part

(a) to find approximate values of the following percentiles:

i. 50th iv. 90th ii. 70th v. 40th iii. 10th