thanks for the help

What is the age distribution of promotion-sensitive shoppers? A supermarket super shopper is dened as a shopper for whom at least 70% of the items purchased were on sale or purchased with a coupon. 18-28 29-39 40-50 51-61 62 and over 23 34 45 56 67 10% 45% 25% 13% 7% m USE SALT For the 62-and-over group, use the midpoint 67 years. (a) Using the age midpoints xand the percentage of super shoppers, do we have a valid probability distribution? Explain. 0 Yes. The events are indistinct and the probabilities sum to less than 1. O No. The events are indistinct and the probabilities sum to more than 1. O No. The events are distinct and the probabilities sum to 1. 0 Yes. The events are distinct and the probabilities sum to 1. 0 Yes. The events are distinct and the probabilities do not 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.) no so as Sui! Shun as Sup Shun 20 to 0 a 34 45 so a O '0' G) O as Sui! Shun | I as Sup Shun 20 34 45 so a O '0' (D O (c) Compute the expected age p of a super shopper. (Round your answer to two decimal places.) u= yr (d) Compute the standard deviation 0 for ages of super shoppers. (Round your answer to two decimal places.) a: yr