A sample of 65 electric motors had a mean efficiency of 0.595 with a standard deviation of

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A sample of 65 electric motors had a mean efficiency of 0.595 with a standard deviation of 0.05 . Let $\mu$ represent the mean efficiency of electric motors of this type.

a. Find the $P$-value for testing $H_{0}: \mu \geq 0.6$ versus $H_{1}: \mu<0.6$.

b. Either the mean efficiency is less than 0.6 , or the sample is in the most extreme $\%$ of its distribution.

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Statistics For Engineers And Scientists

ISBN: 9780073107677

6th Edition

Authors: William Navidi

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Question Posted: Feb 04, 2024 05:00 AM

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A sample of 65 electric motors had a mean efficiency of 0.595 with a standard deviation of

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Statistics For Engineers And Scientists

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