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4. A stenographer claims that she can type at the rate of 126 words per minute. Can we reject her claim on the basis of 110 trials in which she demonstrates a mean of 115 words with a standard deviation of 15 words? Use 5% level of significance.

4. A stenographer claims that she can type at the rate of 126 words per minute. Can we reject her claim on the basis of 110 trials in which she demonstrates a mean of 115 words with a standard deviation of 15 words? Use 5% level of significance.

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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4. A stenographer claims that she can type at the rate of 126 words per minute. Can we reject her claim on the basis of 110 trials in which she demonstrates a mean of 115 words with a standard deviation of 15 words? Use 5% level of significance.
Transcribed Image Text:4. A stenographer claims that she can type at the rate of 126 words per minute. Can we reject her claim on the basis of 110 trials in which she demonstrates a mean of 115 words with a standard deviation of 15 words? Use 5% level of significance.
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