Suppose that the average number of Facebook friends users have is normally distributed with a mean of 113 and a standard deviation of about 42. Assume forty-nine individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible.a. What is the distribution of $\bar{x}$? $\bar{x} \sim N\left(\, \square, \square \,\right)$b. For the group of 49, find the probability that the average number of friends is more than 121. $\square$c. Find the first quartile for the average number of Facebook friends. $\square$d. For part b), is the assumption that the distribution is normal necessary? ☐ Yes ☐ No

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Suppose that the average number of Facebook friends users have is normally distributed with a mean of 113 and a standard deviation of about 42. Assume forty-nine individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of ? - N b. For the group of 49, find the probability that the average number of friends is more than 121. 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? O YesO No

Suppose that the average number of Facebook friends users have is normally distributed with a mean of 113 and a standard deviation of about 42. Assume forty-nine individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of ? - N b. For the group of 49, find the probability that the average number of friends is more than 121. 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? O YesO No

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Suppose that the average number of Facebook friends users have is normally distributed with a mean of 113 and a standard deviation of about 42. Assume forty-nine individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible.

a. What is the distribution of $\bar{x}$? $\bar{x} \sim N\left(\, \square, \square \,\right)$

b. For the group of 49, find the probability that the average number of friends is more than 121. $\square$

c. Find the first quartile for the average number of Facebook friends. $\square$

d. For part b), is the assumption that the distribution is normal necessary? ☐ Yes ☐ No

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