Empirical Rule

lrich90049

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Oct 27, 2009
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I am having the most difficult time solving this, please assist.

A placement test has a mean of 65 and a standard deviation of 2. A histogram of the data shows that the distribution is bell-shaped. Using the Empirical Rule, what two values have about 95% of the curve between them?
 

galactus

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Sep 28, 2005
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The Empirical Rule says that 95% of the data is within 2 standard deviations of the mean.
 
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