The monthly unity 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 $70, (h) between 537 and 5110 and (c) more than $140 (a) The probability that a randomly selected utility bill is less than $70 is (Round to four decimal places as needed) (b) The probability that a randomly selected utility bill is between $87 and $110 is (Round to four decimal places as needed) (c) The probability that a randomly selected utility bill is more than $140 is (Round to four decimal places as needed)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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 randomly selected utility bill is (a) less than $70, (b) between 537 and $110, and (c) more than $140
(a) The probability that a randomly selected utility bill is less than $70 is
Round to four decimal places as needed)
(b) The probability that a randomly selected utility bill is between $87 and $110 is
(Round to four decimal places as needed)
(c) The probability that a randomly selected utility bill is more than $140 is
(Round to four decimal places as needed)
Transcribed Image Text: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 $70, (b) between 537 and $110, and (c) more than $140 (a) The probability that a randomly selected utility bill is less than $70 is Round to four decimal places as needed) (b) The probability that a randomly selected utility bill is between $87 and $110 is (Round to four decimal places as needed) (c) The probability that a randomly selected utility bill is more than $140 is (Round to four decimal places as needed)
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