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March 25, 2017

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Assume that women's heights are normally distributed with a mean given by u=64.6 in
and a standard deviation given by 0=2.8in.

a) If 1 woman is randomly selected, find the probability that her height is less than 65in.

b) If 49 women are randomly selected, find the probability that they have a mean height less than 65 in.

  • statistics - ,

    great webpage for your problem, just plug in the values that you have

    http://davidmlane.com/hyperstat/z_table.html

  • statistics - ,

    a.
    z = (65-64.6)/(2.8/sqrt(1))

    z = 0.14
    b.
    z = (65-64.6)/(2.8/sqrt(49))

    z = 1

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