SOLUTION: Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are greater than 61
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Question 1143418: Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are greater than 61? Please do not round your answe Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! z=(x-mean)/sd or z>(61-97)/12 or z > -3
This would be 99.85% by the empirical rule, which itself rounds to 0.3% at 3 standard deviations (two sided, and this is one-sided, or half).
