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An injection moulding machine produces battery connectors for mobile phones. The process "usually" runs with a mean diameter of 3.8mm and a standard deviation = 2.2 mm. The operator suspects that the process has shifted. A sample of 20 was taken. The 95% CI for u, using the one-sample Z, is 2.736mm, 4.664mm What action should you take? O Let the machine continue to run. Stop the machine. Wait and re-do the statistical test, the wrong statistical test was used.

An injection moulding machine produces battery connectors for mobile phones. The process "usually" runs with a mean diameter of 3.8mm and a standard deviation = 2.2 mm. The operator suspects that the process has shifted. A sample of 20 was taken. The 95% CI for u, using the one-sample Z, is 2.736mm, 4.664mm What action should you take? O Let the machine continue to run. Stop the machine. Wait and re-do the statistical test, the wrong statistical test was used.

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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An injection moulding machine produces battery connectors for mobile phones. The process "usually" runs with a mean diameter of 3.8mm and a standard deviation = 2.2 mm. The operator suspects that the process has shifted. A sample of 20 was taken. The 95% CI for u, using the one-sample Z, is 2.736mm, 4.664mm What action should you take? O Let the machine continue to run. Stop the machine. O Wait and re-do the statistical test, the wrong statistical test was used.
Transcribed Image Text:An injection moulding machine produces battery connectors for mobile phones. The process "usually" runs with a mean diameter of 3.8mm and a standard deviation = 2.2 mm. The operator suspects that the process has shifted. A sample of 20 was taken. The 95% CI for u, using the one-sample Z, is 2.736mm, 4.664mm What action should you take? O Let the machine continue to run. Stop the machine. O Wait and re-do the statistical test, the wrong statistical test was used.
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