Mathematics, 25.10.2021 08:10 awesomegrill
the mean lifetime of a sample of 150 torch bulbs produced by a company is computed to be 400 hours with a standard deviation of 80 hours . if m is the mean lifetime of all the bulbs produced by the company, test the hypothesis m=450 hours against m=450 hours at 5% level of significance.
Answers: 1
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the mean lifetime of a sample of 150 torch bulbs produced by a company is computed to be 400 hours w...
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