Asked by tolendoy
in 2000 the average charge of tax preparation was $95. assuming a normal distribution and a standard deviation of $10. What proportion of tax preparation fees were more than $95 ?
Answers
Answered by
Steve
exactly half.
It doesn't matter what the std is. In a normal distribution, 1/2 of the population is above or below the mean.
It doesn't matter what the std is. In a normal distribution, 1/2 of the population is above or below the mean.
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