Medicare's new medical plans offer a wide range of variations and choices for seniors when picking a drug plan. the monthly cost for a stand-alone drug plan varies from plan to plan and from state to state. the accompanying table gives the premium for the plan with the lowest cost for each state. state cost per month (dollars) alabama 14.08 alaska 3.82 arizona 12.31 arkansas 10.17 california 8.19 colorado 11.36 connecticut 13.66 delaware 9.29 district of columbia 6.89 florida 11.19 georgia 14.14 hawaii 14.77 idaho 1.87 illinois 9.88 indiana 7.50 iowa 1.87 kansas 7.65 kentucky 15.72 louisiana 7.03 maine 17.36 maryland 9.79 massachusetts 13.76 michigan 1.87 minnesota 13.41 mississippi 20.00 missouri 7.10 montana 10.95 nebraska 7.51 nevada 10.09 new hampshire 1.87 new jersey 7.87 new mexico 12.66 new york 1.87 north carolina 5.24 north dakota 7.01 ohio 1.87 oklahoma 7.62 oregon 8.44 pennsylvania 9.39 rhode island 10.40 south carolina 7.46 south dakota 19.05 tennessee 16.40 texas 5.22 utah 1.87 vermont 13.91 virginia 15.69 washington 8.41 west virginia 6.04 wisconsin 19.48 wyoming 1.87a. use class intervals of $0 to < $3 , $3 to < $6, $6 to < $9, etc., to create a relative frequency distribution for these data. b. construct a histogram and comment on its shape. c. using the relative frequency distribution or the histogram, estimate the proportion of the states that have a minimum monthly plan of less than $13.00 a month.