Suppose that the number of Facebook friends users have is normally distributed with a mean of 124 and a standard deviation ofabout 40. Assume six individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of 5:? 2: ~ MED) b. For the group of 6, nd the probability that the average number of friends is less than 139. C] c. Find the third quartile for the average number of Facebook friends. Round to 2 decimal places. C] HINTS: - X ~ N( M m - :7: ~ N( p, ,a/) . To find 5: given a percentage or probability, use invnorm(p, ,u , (IA/Ti.) . To find P(a