statistics

1.  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, years18-2829-3940-5051-6162 and overMidpoint x2334455667Percent of super shoppers5%41%26%11%17%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.    (b) Use a histogram to graph the probability distribution of part (a). (c) Compute the expected age μ of a super shopper. (Round your answer to two decimal places.)μ =     (b) Use a histogram to graph the probability distribution in part (a). (c) Find the probability that a British nurse selected at random in 1851 would be 60 years of age or older. (Round your answer to three decimal places.)    

(b) Find the probability that two or more of the five parolees will be repeat offenders. (Round your answer to three decimal places.)   How much did Kevin effectively contriute to the Samaritan Center for the Homeless? (Round your answer to two decimal places.)$ [removed]