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The manufacturing of a layered material requires three

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The manufacturing of a layered material requires three steps which each require a certain amount of time. These steps can be assumed to be independent and the time for completion normally distributed. The mean value for completing each step is 15, 30, and 29 minutes and their respective standard deviations are 1, 2, and 1.5 minutes. What is the probability that it takes at most 1 hour to produce a randomly selected material?

Reference no: EM13644261

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