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Some IQ scores are standardized with a mean of 100 and a standard deviation of 16. Using the 68-95-99.7 Rule, Determine: In what interval you would expect the middle 95% of the IQ scores to be found.

  • Statistics -

    For a normal distribution, 68.27% of members lie within 1 s.d. of the mean, 95.45% within 2 s.d., and 99.73% within 3 s.d.

    They want you to round these numbers off to 68-95-99.7, so: 95% of scores are within 2 standard deviations of the mean (100). Therefore the answer is 68 to 132

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