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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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Question

7.15 Finding the critical value t*. What critical value
t* from Table D should be used to calculate the margin
of error for a confidence interval for the mean of the
population in each of the following situations?

(a) A 95% confidence interval based on n = 15 observations.
(b) A 95% confidence interval from an SRS of
28 observations.
(c) A 90% confidence interval from a sample of size 28.
(d) These cases illustrate how the size of the margin of
error depends upon the confidence level and the sample
size. Summarize these relationships.

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