The resistivity of the produced kits is also tested. The mean resistivity is 230 Ohm. The production manager  suspects that the production line is producing too many out-of-tolerance components and should be stopped  and serviced. The quality assurance department in the company decided to make a study by taking a random  sample of 37 kits and testing their resistivity. It is found that the mean resistivity of the sample kits is 225.6  Ohms, with a standard deviation of ?? = 3.5 Ohms. Using a level of significance of 0.05 and 0.1: G) determine whether there is enough evidence to support that the production manager’s claim is  reasonable. H) What can you conclude from the conducted hypothesis test?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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The resistivity of the produced kits is also tested. The mean resistivity is 230 Ohm. The production manager 
suspects that the production line is producing too many out-of-tolerance components and should be stopped 
and serviced. The quality assurance department in the company decided to make a study by taking a random 

sample of 37 kits and testing their resistivity. It is found that the mean resistivity of the sample kits is 225.6 
Ohms, with a standard deviation of ?? = 3.5 Ohms. Using a level of significance of 0.05 and 0.1:
G) determine whether there is enough evidence to support that the production manager’s claim is 
reasonable.
H) What can you conclude from the conducted hypothesis test?

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