Question

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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