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What are the scores that will range the low intelligence

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An IQ test shows that the scores are normally distributed with a mean of 100 and variance of 225. It is desirable to arrange the participants into three groups (low intelligence, average intelligence and high intelligence) so that 20% of the participants are classified under the first group. 65% in the second and 15 in the third. What are the scores that differentiate each intelligence group from one another?

  • What are the scores that will range the low intelligence?
  • What are the scores that will range to average intelligence?
  • What are the scores that will range to high intelligence?

Reference no: EM132844939

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