With reference to Exercise 3.62, In exercise Find k if the joint probability distribution of X, Y,

Question:

With reference to Exercise 3.62,
In exercise
Find k if the joint probability of X, Y, and Z is given by
f(x,y,z) = kxyz
For x = 1, 2; y = 1, 2, 3; z = 1, 2.
Find the following values of the joint function of the three random variables:
(a) F(2, 1, 2);
(b) F(1, 0, 1);
(c) F(4, 4, 4).
Distribution
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