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13 October, 14:32

He percent distribution of the number of grandchildren for a sample of 1904 grandparents is shown in the pie chart. find each probability.

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  1. 13 October, 17:25
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    P (X=1) = 0.09

    P (X < 5) = 0.09 + 0.36

    P (X > = 2) =.36 +.23 +.09 +.23

    P (2 < = X < = 7) =.36 +.23
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