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6 February, 09:40

IQ scores for adults age 20 to 34 years are normally distributed according to N (120, 20). In what range does the middle 68% of people in this group score on the test?

100-140

120-160

80-120

80-140

120-160

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Answers (1)
  1. 6 February, 12:44
    0
    The answer would be 80-120.
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