Mathematics, 28.11.2019 00:31 cjdaly123

Manufacture of a certain component requires three different machining operations. machining time for each operation has a normal distribution, and the three times are independent of one another. the mean values are , , and min, respectively, and the standard deviations are , , and min, respectively. what is the probability that it takes at most hour of machining time to produce a randomly selected component

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