Question
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $22.
a.What is the probability that a randomly selected monthly cell phone bill is less than $95?
b.What is the probability that a randomly selected monthly cell phone bill is between $62 and $84?
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Business Analytics Data Analysis and Decision Making
Authors: S. Christian Albright, Wayne L. Winston
5th edition
1133629601, 9781285965529 , 978-1133629603
