In a previous example, your sample consisted of 83 respondents. Suppose you doubled your sample size to 166 respondents and found that the average remained the same (39.04 hrs), as did the standard deviation (11.51 hrs). Calculate a 95 percent confidence interval of the true average in the population by using a new sample of 166 respondents. How did doubling sample size affect the results?

In a previous example, your sample consisted of 83 respondents. Suppose you doubled your sample size to 166 respondents and found that the average remained the same (39.04 hrs), as did the standard deviation (11.51 hrs). Calculate a 95 percent confidence interval of the true average in the population by using a new sample of 166 respondents. How did doubling sample size affect the results?

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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Question

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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