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The monthly utility bills in a city are normally distributed, with a mean of $100 and...
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 $67, (b) between $80 and $100, and (c) more than $110.
(a) The probability that a randomly selected utility bill is less than $67 is nothing. (Round to four decimal places as needed.)
(b) The probability that a randomly selected utility bill is between $80 and $100 is nothing. (Round to four decimal places as needed.)
(c) The probability that a randomly selected utility bill is more than $110 is nothing. (Round to four decimal places as needed.)
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