I. Solve the following problems involving Test of Hypotheses using the Four-Step Solution. 1. The manufacturing sector for flashlight batteries produces batteries with an average life of 35 hours. One manufacturer claims that the average life of his batteries exceeds the established standard of 35 hours. A mining firm would like to but a fairly large quantity of batteries from the manufacturer if his claim is tested to be true. A random sample of 100 flashlight batteries are tested. It is found that the average life of the sample batteries is 38 hours with a standard deviation of 5 hours. At 1% level of Significance, do you think that the mining firm will decide to buy from the said manufacturer?

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I. Solve the following problems involving Test of Hypotheses using the Four-Step Solution.
1. The manufacturing sector for flashlight batteries produces batteries with an average life of 35 hours. One
manufacturer claims that the average life of his batteries exceeds the established standard of 35 hours. A mining
firm would like to but a fairly large quantity of batteries from the manufacturer if his claim is tested to be true. A
random sample of 100 flashlight batteries are tested. It is found that the average life of the sample batteries is 38
hours with a standard deviation of 5 hours. At 1% level of Significance, do you think that the mining firm will decide
to buy from the said manufacturer?
Transcribed Image Text:I. Solve the following problems involving Test of Hypotheses using the Four-Step Solution. 1. The manufacturing sector for flashlight batteries produces batteries with an average life of 35 hours. One manufacturer claims that the average life of his batteries exceeds the established standard of 35 hours. A mining firm would like to but a fairly large quantity of batteries from the manufacturer if his claim is tested to be true. A random sample of 100 flashlight batteries are tested. It is found that the average life of the sample batteries is 38 hours with a standard deviation of 5 hours. At 1% level of Significance, do you think that the mining firm will decide to buy from the said manufacturer?
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