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The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $16.Find the probability that a

The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $16.Find the probability that a randomly selected utility bill is (a) less than $65 , (b) between $87and $110, and (c) more than $120. (Round to four decimal places)

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