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Mathematics, 22.11.2019 03:31 neptunesx
Molybdenum rods are produced by a production line setup. it is desirable to check whether the process is in control, i. e. equal to 2.2 inches. let x = length of such a rod. assume x is approximately normally distributed where the mean and variance are unknown. take n = 400 sample rods, with sample average length 2 inches with a standard deviation of 0.5 inches. using Ξ±=0.05, find the rejection region and test statistic of the necessary test to be held.
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Molybdenum rods are produced by a production line setup. it is desirable to check whether the proces...
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