Monday, 24 April 2017

probability - P(YleX)=intinfty0P(YleX|X=x)fX(x)dx

I was looking at a solution of a probability exercise and the author of the solution uses the formula P(YX)=0P(YX|X=x)fX(x)dx

where X, Y are the random variables fX is the density function of the random variable X. From where does this result come from?

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