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发帖数: 541 | 1 A normal distribution has a mean of 60. If 15.87% of the area under the
curve
is to the left of 54, find the area to the right of 64.
？？ 谢谢 | t**i
发帖数: 688 | 2 You have X~N(60, sigma2)
You need to use the known condition Pr(X<=54)=0.1587 to calculate sigma2,
then compute the CDF Pr(X>=64). |
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