Suppose that the average number of Facebook friends users have is normally distributed with a mean of 117 and a standard deviation of about 58. Assume thirteen 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 the group of 13, find the probability that the average number of friends is less than 112.Find the third quartile for the average number of Facebook friends.For part b), is the assumption that the distribution is normal necessary? No or yes?

According to guidelines we solve first three subparts only when given multiple subparts.

Answered: Suppose that the average number of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that the average number of Facebook friends users have is normally distributed with a mean of 117 and a standard deviation of about 58. Assume thirteen 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 the group of 13, find the probability that the average number of friends is less than 112.
Find the third quartile for the average number of Facebook friends.
For part b), is the assumption that the distribution is normal necessary? No or yes?

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