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The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14. Find the probability that
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14. Find the probability that a randomly selected utility bill is (a) less than $69, (b) between $83 and $110, and (c) more than $140. (a) The probability that a randomly selected utility bill is less than $69 is (Round to four decimal places as needed.)
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