Medicares new medical plans offer a wide range of variations and choices for seniors when picking a

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Medicare’s new medical plans offer a wide range of variations and choices for seniors when picking a drug plan (San Luis Obispo Tribune, No vem ber 25, 2005). 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.

a. 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.

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