QUESTION 23 10 points Save Answ: (10 points) A manager observes a checkout line at a WalMart store. She nds that the average number of people served is 20 per hour. a. what is the probability that no people check out in any given hour? b. what is the probability that 10 people check out in any given hour? 0. what is the probability that fewer than 5 people check out in any given hour d. what is the probability that at most 9 people check out in any given hour e. what is the standard deviation of the number of people served in an hour? QUESTION 24 15 points Save Answ' (15 points) According to a survey, 30% of employees working at a very large company are happy. Suppose 15 employees are selected at random. (Binomial distribution) Let X denote the number of employees who are happy a. What is the probability that between two and six employees is happy? b. What is the probability that all 15 are happy? c. What is the probability that at least 5 are happy? d. What is the probability that more than 10 are happy? 6. Binomial distribution is affected by , while Poisson distribution is inuenced by