2. In a random sample of 87 college students, the average number of GroupMe messages handled in one day is 49. The 95% confidence interval for the mean number of messages handled by students daily is given as 47 to 51. a. What is the population standard deviation of the sample? b. If the number of samples were doubled, by what factor would the confidence interval change (keeping the same confidence level?)

2. In a random sample of 87 college students, the average number of GroupMe messages handled in one day is 49. The 95% confidence interval for the mean number of messages handled by students daily is given as 47 to 51. a. What is the population standard deviation of the sample? b. If the number of samples were doubled, by what factor would the confidence interval change (keeping the same confidence level?)

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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