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11 August, 06:32

A set of average city temperatures in December are normally distributed with a mean of 16.3 C and a

standard deviation of 2 C.

What proportion of temperatures are between 12.9 and 14.9?

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Answers (1)
  1. 11 August, 08:51
    0
    Step-by-step explanation:

    z value of 14.9 = (16.3 - 14.9) / 2

    = 0.7

    =.7580

    z value of 12.9 = (16.3 - 12.9) / 2

    = 1.7

    =.9554

    Required probability =.9554 -.7580

    =.1974

    or 19.74 %.
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