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Find the 95% confidence interval of the true mean.

Find the 95% confidence interval of the true mean.

MATLAB: An Introduction with Applications
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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7.2 #14
14. Social Networking Sites A recent survey of 8 social networking sites has a mean of 13.1 million visitors for a specific month. The standard deviation was 4.1 million. Find the 95% confidence interval of the true mean. Source: ComScore Media Matrix. 9.7<μ< 16.5
Transcribed Image Text:14. Social Networking Sites A recent survey of 8 social networking sites has a mean of 13.1 million visitors for a specific month. The standard deviation was 4.1 million. Find the 95% confidence interval of the true mean. Source: ComScore Media Matrix. 9.7<μ< 16.5
Expert Solution
Step 1: Determine the given data in the question

Let mu be the population mean.

Given that,

Sample size left parenthesis n right parenthesis equals 8

Sample mean left parenthesis x with bar on top right parenthesis equals 13.1

Standard deviation left parenthesis s d right parenthesis equals 4.1

Confidence level left parenthesis C right parenthesis equals 95 percent sign equals 0.95

alpha equals 1 minus C equals 1 minus 0.95 equals 0.05


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