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bookin.com ) 365 office Facebook Other bookmarks Readi What is the age distribution of promotion-sensitive shoppers? A supermarket super shopper is defined as a shopper for whom at least 70% of the items purchased were on sale or purchased with a coupon. Age range, years 18-28 29-39 40-50 51-61 62 and over Midpoint x 34 Percent of super shoppers 6% 43% 21% 13% 17% LO USE SALT For the 62-and-over group, use the midpoint 67 years. (a) Using the age midpoints x and the percentage of super shoppers, do we have a valid probability distribution? Explain. No. The events are indistinct and the probabilities sum to more than 1 O Yes. The events are indistinct and the probabilities sum to less than 1, 4 Yes. The events are distinct and the probabilities do not sum to 1. Yes. The events are distinct and the probabilities sum to 1. O No. The events are distinct and the probabilities sum to 1. (b) Use a histogram to graph the probability distribution of part (a). (Because the data table has summarized the data into categories, use SALT to create a bar chart.) 40 30 Sup Shipp's 20