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Weights of newborn babies in a certain state have normal distribution with mean 7 3 and standard deviation 1 2 lb A random sample of

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Weights of newborn babies in a certain state have normal distribution with mean 7 3 and standard deviation 1 2 lb A random sample of 64 newborns is selected Let x represent the mean weight of the sample What is the probability that the sample mean weight x is more than 7 5 lb

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