The income distribution of workers in a certain factory was found to be normal with mean of $. 5000 and standard deviation equal to $. 500. There were 228 persons getting above $. 6000. How many persons were there in all? (Area under the standard normal curve between height at 0 and 2 is 0.4772).

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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The income distribution of workers in a certain factory was found to be normal with mean of $. 5000
and standard deviation equal to $. 500. There were 228 persons getting above $. 6000. How many
persons were there in all? (Area under the standard normal curve between height at 0 and 2 is 0.4772).
Transcribed Image Text:The income distribution of workers in a certain factory was found to be normal with mean of $. 5000 and standard deviation equal to $. 500. There were 228 persons getting above $. 6000. How many persons were there in all? (Area under the standard normal curve between height at 0 and 2 is 0.4772).
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