Statistics Solutions

[Steps Shown] A manufacturer of flashlight batteries claims that the mean life of his product will exceed 30 hours. A company is willing to buy a very large

Question: A manufacturer of flashlight batteries claims that the mean life of his product will exceed 30 hours. A company is willing to buy a very large quantity of batteries if the claim is true. A random sample of 36 batteries is tested, and it is found that the sample mean is 34 hours. If the population of batteries has a standard deviation of five hours, and H 0 is that mu is less than or equal to 30, for what values of (alpha) will the batteries be purchased.

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