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The results of an exam are distributed with a standard deviation of 6.54%. If 14% of the students scored below 55%, then the value of the mean correct to the nearest 10th of a percent is _____?

Montanna002

by Montanna002 at January 16, 2011

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Montanna -You did not say, but assuming a standard normal distribution, the value of z corresponding with an area of 0.14 is equal to -1.0803.  Now all you have to do is solve this equation for the mean:Hope this helped

Steve204 Steve204 January 17, 2011

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