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

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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
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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