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statistics

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Test scores on the
ACT exam are normally distributed with a mean of 211 and deviation of 4.8.

Using the 68-95-99.7 rule, find the percentage of ACT scores within 9.6 of the mean of 21.1, and 14.4 of the mean of 21.1

  • statistics - ,

    Mean ± 2 SD = 95%

    Mean ± 3 SD = 99.7%

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