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April 19, 2015

Homework Help: statistics

Posted by Tommy on Thursday, February 7, 2008 at 11:42pm.

The distribution of scores on the SAT is approx. normal with mu= 500 and std dev=100.

a)what proportion of the population have SAT scores above 650?
b)what proportion of of the population have SAT scores below 540?
c)what is the minimum SAT score needed to be in the highest 20% of the population?
d)what SATE scores separates the top 60% from the rest of the distribution?

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