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2. A factory has a machine that dispenses 80 ml of fluid in a bottle. The head of the production believes that the average amount of fluid is not 80 ml. Using 55 samples, he measures the average amount dispensed by the machine to be 78 ml with a standard deviation of 2.5. At a 90% confidence level, is there enough evidence to support the idea that the machine is not working properly?

2. A factory has a machine that dispenses 80 ml of fluid in a bottle. The head of the production believes that the average amount of fluid is not 80 ml. Using 55 samples, he measures the average amount dispensed by the machine to be 78 ml with a standard deviation of 2.5. At a 90% confidence level, is there enough evidence to support the idea that the machine is not working properly?

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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Please don’t use excel
2. A factory has a machine that dispenses 80 ml of fluid in a bottle. The head of the production believes that the average amount of fluid is not 80 ml. Using 55 samples, he measures the average amount dispensed by the machine to be 78 ml with a standard deviation of 2.5. At a 90% confidence level, is there enough evidence to support the idea that the machine is not working properly?
Transcribed Image Text:2. A factory has a machine that dispenses 80 ml of fluid in a bottle. The head of the production believes that the average amount of fluid is not 80 ml. Using 55 samples, he measures the average amount dispensed by the machine to be 78 ml with a standard deviation of 2.5. At a 90% confidence level, is there enough evidence to support the idea that the machine is not working properly?
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