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Problem

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13 Nov 2021

Given information

Given that, the Screw Right Company claims their 3/4 inch screws are within ±0.23 of the claimed mean diameter of 0.750 inches with a standard deviation of 0.115 inches. We have to find the probability that 50 randomly selected screws will be within the stated tolerance levels. And to check the company’s diameter claim is plausible or not.

 

Step-by-step explanation

Step 1.

According to the given information we have, 

Then the probability that 50 randomly selected screws will be within the stated tolerance levels will be, 

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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