What is the age distribution of promotion-sensitive shoppers? A supermarket super shopper is defined as a shopper for wh

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What Is The Age Distribution Of Promotion Sensitive Shoppers A Supermarket Super Shopper Is Defined As A Shopper For Wh 1 (75.38 KiB) Viewed 35 times

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 Midpoint x Percent of super shoppers USE SALT μ= Supr Shpprs 18-28 29-39 0 23 34 6% 45 34 47% 40-50 51-61 62 and over O No. The events are indistinct and the probabilities sum to more than 1. O Yes. The events are distinct and the probabilities sum to 1. O Yes. The events are indistinct and the probabilities sum to less than 1. O No. The events are distinct and the probabilities sum to 1. 45 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. O Yes. The events are distinct and the probabilities do not sum to 1. 19% 67 56 (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.) L 9% 19% Supr Shpprs 67 40 30 20 10- 23 34 (c) Compute the expected age of a super shopper. (Round your answer to two decimal places.) yr 45 56 (d) Compute the standard deviation for ages of super shoppers. (Round your answer to two decimal places.) o=1 Tyr Supr Shoprs 30- 20 10- 23 34 Supr Shpprs 30- J 20- 10- 45 56 67 0