Chapter 5 Joint Probability Distributions and Random Samples


The Marginal Probability Density Functions



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The Marginal Probability Density Functions




Def. The marginal probability density functions of X and Y, denoted by fx (x) and fy (y), respectively, are given by



fx (x) =

fy (y) =


Ex 8. (a) Find the marginal p.d.f. of X in Example 6.

(b) Find the marginal p.d.f. of Y in Example 6



  1. Find in Example 4





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