Suppose that the replacement times for washing machines are normally distributed with a mean of 8.8 years and a standard deviation of 1.2 years. What percentage of washing machines in a random sample of size 9 will be replaced in less than 10 years?? O 99.87% 84.13% 68% 50.13% O None of the other options
Suppose that the replacement times for washing machines are normally distributed with a mean of 8.8 years and a standard deviation of 1.2 years. What percentage of washing machines in a random sample of size 9 will be replaced in less than 10 years?? O 99.87% 84.13% 68% 50.13% O None of the other options
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Transcribed Image Text:Suppose that the replacement times for washing machines are normally distributed with a mean of 8.8 years and a
standard deviation of 1.2 years.
What percentage of washing machines in a random sample of size 9 will be replaced in less than 10 years??
O 99.87%
84.13%
68%
50.13%
O None of the other options
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