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Test the null hypothesis that supervision had no effect on the performance of the workers. Use the 1 percent level of significance. (b) What is the p value? (c) What would you conclude was the result of the supervision?

Test the null hypothesis that supervision had no effect on the performance of the workers. Use the 1 percent level of significance. (b) What is the p value? (c) What would you conclude was the result of the supervision?

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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Forty workers were randomly divided into two sets of 20 each. Each set
spent 2 weeks in a self-training program that was designed to teach a
new production technique. The first set of workers was accompanied by
a supervisor whose only job was to check that the workers were all paying attention. The second group was left on its own. After the program
ended, the workers were tested. The results were as follows:

(a) Test the null hypothesis that supervision had no effect on the performance of the workers. Use the 1 percent level of significance.
(b) What is the p value?
(c) What would you conclude was the result of the supervision?

Supervised group Unsupervised group Sample mean Sample standard deviation 70.6 8.4 77.4 7.4
Transcribed Image Text:Supervised group Unsupervised group Sample mean Sample standard deviation 70.6 8.4 77.4 7.4
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