SOLUTION: IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15that an individual's IQ score is found to be 120. Find the Z score correspondingis to this

Question 741264: IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15that an individual's IQ score is found to be 120. Find the Z score correspondingis to this value.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15that an individual's IQ score is found to be 120. Find the Z score correspondingis to this value.
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How far is 120 from the mean?
120-100 = 20
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How many standard deviations is that distance?
20/15 = 4/3
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Ans: z = 4/3
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Cheers,
Stan H.
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