SOLUTION: Qs are normally distributed with a mean of 100 and a standard deviation of 15.If an individual is randomly selected, find the probability that his or her IQ is below 70.
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Question 1060345: Qs are normally distributed with a mean of 100 and a standard deviation of 15.If an individual is randomly selected, find the probability that his or her IQ is below 70. Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! calculate the z-score associated with IQ 70
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z-score = (70 - 100) / 15 = -2
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lookup z-score in the table of z-scores
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Probability ( X < 70 ) = 0.0228
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