Maurice Tutor

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    Argosy University/ Phoniex University/
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    Phoniex University
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Category > Management Posted 10 Oct 2017 My Price 3.00

mean diameter

37.    A machine that produces ball bearings is sampled periodically. The mean diameter of the ball bearings produced is known to be under control, but the variability of these diameters is of concern. If the machine is working properly, the variance is 0.50 mm2. If a sample of 31 measurements shows a sample variance of 0.94 mm2, should the operator of the machine be concerned that something is wrong with the machine? Use 𝛼 = 0.05.

 

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Maurice Tutor
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Status NEW Posted 10 Oct 2017 02:10 PM My Price 3.00

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