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The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211.operations per surgeon. She selected a random sample of 15 surgeons and found that the mean number of operation they performed was x = 208.8. The sample standard deviation was s = 3.8. Test the null hypothesis that the population mean is 211 against the alternative hypothesis that the population mean is less than 211 at the 0.10 level of significance.

The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211.operations per surgeon. She selected a random sample of 15 surgeons and found that the mean number of operation they performed was x = 208.8. The sample standard deviation was s = 3.8. Test the null hypothesis that the population mean is 211 against the alternative hypothesis that the population mean is less than 211 at the 0.10 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
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The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211.operations per surgeon. She selected a random sample of 15 surgeons and found that the mean number of operation they performed was x = 208.8. The sample standard deviation was s = 3.8. Test the null hypothesis that the population mean is 211 against the alternative hypothesis that the population mean is less than 211 at the 0.10 level of significance.
Transcribed Image Text:The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211.operations per surgeon. She selected a random sample of 15 surgeons and found that the mean number of operation they performed was x = 208.8. The sample standard deviation was s = 3.8. Test the null hypothesis that the population mean is 211 against the alternative hypothesis that the population mean is less than 211 at the 0.10 level of significance.
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