Mathematics, 08.02.2021 22:20 0143623
Of all the weld failures in a certain assembly, 85% of them occur in the weld metal itself, and the remaining 15% occur in the base metal. A sample of 20 weld failures is examined. Round your answers to 4 decimal places. Determine the probability that exactly five failures are in the base metal. Determine the probability that fewer than four of the failures are in the base metal. Give the mean and variance of the number of base metal failures. E ( X )
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Of all the weld failures in a certain assembly, 85% of them occur in the weld metal itself, and the...
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