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2 Part Question Part 1 Probability

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A man has designed a machine to produce a compound and  has calibrated it so the compound always has an atomic weight of 20.4. Unbeknownst to him, the machine has a defect in that it doesn't always produce the compound with precisely that weight. Assume that the distribution of the weights of the compounds produced by the machine is normal with a mean of 21.37 and standard deviation of 0.4

Find the probability that the atomic weight of a single compound chosen at random is less than 22.07

Apr 25th, 2015

Z = 22.07 - 21.37 / 0.4 = 1.75

P(Z < 1.75) = 0.9599

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Apr 25th, 2015

thank you for answering


May 18th, 2015

thank you for answering


May 18th, 2015

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