Suppose that the average number of Facebook friends users have is normally distributed with a mean of 141 and a standard deviation of about 53. Assume forty individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. What is the distribution of ¯xx¯? ¯xx¯~ N(______, _____) for thegroup of 40, find the probability that the  average number of friends is less than 128. ________ Find the first quartile for the average number of Facebook friends.  For part b), is the assumption that the distribution is normal necessary? Yes/No

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