2. A manufacturer of flashlight batteries claims that the average life of his product will exceed 40 hours. A company is willing to buy a very large shipment of batteries if the claim is true. A random sample of 36 batteries is tested, and it is found that the sample mean is 45 hours. If the population of batteries has a standard deviation of 5 hours, is it likely that the batteries will be bought? Ho: H1: α Zcri = Zcom = comparison Computation: R: onclusion:

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A:

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Q: Does the following table represent a valid discrete probability distribution? 1 3 4 P(X= x) 0.11 0.0...

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Q: The area of the shaded region is (Round to four decimal places as needed.)

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