Suppose that the average number of Facebook friends users have is normally distributed with a mean of 134 and a standard deviation of about 59. Assume seven individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of ? a - N( b. For the group of 7, find the probability that the average number of friends is more than 120. c. Find the first quartile for the average number of Facebook friends. d. For part b), is the assumption that the distribution is normal necessary? No Yes