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The crack length in micrometers microm of a randomly

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Reference no: EM13580185

Suppose cracks exist in a certain material, and the crack length [in micrometers (µm)] of a randomly selected crack is normally distributed with an average length of 71 and a variance of 6.25. (a) What percantage of cracks are over 74 µm long?

Reference no: EM13580185

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