ASK YOUR TEACHER BBUNDERSTAT12 5.1.010.MI.S. MY NOTES 2. [-/3.54 Points] DETAILS 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 67 23 34 45 56 Midpoint x 6% 43% 19% 11% 21% Percent of super shoppers LA 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. O Yes. The events are distinct and the probabilities sum to 1. No. The events are indistinct and the probabilities sum to more than 1. Yes. The events are distinct and the probabilities do not sum to 1. No. The events are distinct and the probabilities sum to 1. Yes. The events are indistinct and the probabilities sum to less than 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.) 20 Supr Shpprs Supr Shpprs 20 20 10 10 23 56 6 23 34 56 get Age O 30 20 Supr Shoprs Supr Shoprs 20 20 40 23 34 45 56 67 23 34 56 67 Age O (c) Compute the expected age u of a super shopper. (Round your answer to two decimal places.) H = yr (d) Compute the standard deviation o for ages of super shoppers. (Round your answer to two decimal places.) 0 = yr Submit Answer 90 F Clear 9:02 PM