# Answer to Question #18754 in Statistics and Probability for Mackos

Question #18754

For each of the following, find the constant c so that p(x) satisfies the condition of being a probability density function of a random variable X:

I. p(x) = c(2/3)^x, x ∈ N

II. p(x) = cx, x ∈ {1,2,3,4,5,6}

I. p(x) = c(2/3)^x, x ∈ N

II. p(x) = cx, x ∈ {1,2,3,4,5,6}

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