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Assume the weights of painkiller pills are normally distributed with a mean of 550 mg and a standard deviation of 75 mg. If 81 pills

Assume the weights of painkiller pills are normally distributed with a mean of 550 mg and a standard deviation of 75 mg. If 81 pills are randomly selected, find the probability that they have a mean weight that is less than 535 mg.

please include a sketch of the bell shape curve

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