Suppose that the average number of Facebook friends users have is normally distributed with a mean of 139 and a standard

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Suppose That The Average Number Of Facebook Friends Users Have Is Normally Distributed With A Mean Of 139 And A Standard 1 (22.03 KiB) Viewed 36 times

Suppose that the average number of Facebook friends users have is normally distributed with a mean of 139 and a standard deviation of about 50. Assume forty-three 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 43, find the probability that the average number of friends is less than 148. 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? Yes No