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Name: A researcher is interested in testing whether college students send mo
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A researcher is interested in testing whether college students send more or fewer texts per day, relative to the general population. The researcher finds out that the population average of texts sent per day is µ = 112, but is unable to find out the

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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A researcher is interested in testing whether college students send more or fewer texts per day, relative to the general population. The researcher finds out that the population average of texts sent per day is µ = 112, but is unable to find out the population standard deviation.

This researcher then recruits 25 college students, and asks about their texting. They report a sample mean of M = 120, with a SS= 1200

Compute the sample variance s²= ?

AND WRITE THAT NUMBER DOWN. YOU WILL NEED IT FOR THE NEXT QUESTION

Expert Solution

Step 1

Given data

ư = 112,

sample size (n) = 25,

mean (M) = 120

SS = 1200

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