Question: Suppose X is a random variable with probability density function f(x) and Y is a random variable with density function f(y). Then X and Y

Suppose X is a random variable with probability

Suppose X is a random variable with probability density function f(x) and Y is a random variable with density function f(y). Then X and Y are called independent random variables if their joint density function is the product of their individual density functions: f(x, y) = f (x)f(y) We modelled waiting times by using exponential density functions o f(t)= ift

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