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the three properties of a normal distribution

分类: 作业答案 • 2022-03-09 19:46:32

问题描述：

答

A 服从高斯分布G(2.2,0.25)；B 服从高斯分布G(1.5,0.14).
定义
Y = 6A-7B,
则Y服从高斯分布G(2.7, 0.71568).
所以
P（Y > -2.7） = P (Y/0.71568 > -3.77) = 0.999918.

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the three properties of a normal distribution

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