Mathematics, 25.06.2019 05:50 ghazanfarwaheed7967
Of all the weld failures in a certain assembly, 85% of them occur in the weld metal itself. a sample of 10 weld failures is examined. assume independence of weld failures.(a) what is the probability that fewer than four of them are base metal failures? (b) what is the probability that at least nine of them are base metal failures? (c) find the mean and standard deviation of the number of base metal failures.
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Of all the weld failures in a certain assembly, 85% of them occur in the weld metal itself. a sample...
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