Question 1 The distribution of the IQ (Intelligence Quotient) is approximately normal in shape with a mean of 100 and a standard deviation of 15. According to the standard deviation rule, what range of IQ scores do many (68%) people have? A. Between 85 and 115 B. Between 70 and 130 C. Between 55 and 145 D. Less than 85 or more than 115 E. Above 100
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Step 1:** Calculate one standard deviation below the mean: Mean - Standard Deviation = 100 - 15 = 85 ** Show more…
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