How much time do Americans living in or near cities spend waiting in traffic, and how much does waiting in traffic cost them per year? The data in the file Congestion include this cost for 31 cities. (Source: Data extracted from "The High Cost of Congestion," Time, October 17, 2011, p. 18.) For the time Americans living in or near cities spend waiting in traffic and the cost of waiting in traffic per year,

a. Construct a percentage histogram. b. Construct a cumulative percentage polygon. c. What conclusions can you reach concerning the time Americans living in or near cities spend waiting in traffic? d. What conclusions can you reach concerning the cost of waiting

in traffic per year?

City Boston New York Philadelphia Washington Miami Detroit Cleveland Minneapolis Milwaukee Chicago St. Louis Nashville Memphis Atlanta New Orleans Omaha Wichita Dallas Houston Denver Albuquerque Phoenix Salt Lake City Las Vegas Boise Seattle Portland San Francisco San Jose Los Angeles San Diego Annual Time Sitting in Cost of Sitting in Traffic (hours) Traffic ($) 47 980 54 1126 42 864 74 495 38 785 33 687 20 383 45 916 27 541 71 1568 30 642 35 722 23 477 43 824 35 746 21 389 20 379 45 924 57 1171 49 993 25 525 35 821 27 512 28 512 19 345 44 942 37 744 50 1019 37 721 64 1334 38 794