MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text: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?
Transcribed Image Text:(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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