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For each of the following, find the constant c such that f(x) satisfies the conditions of the PMF for a random variables X. 6. For

For each of the following, find the constant c such that f(x) satisfies the conditions of the PMF for
a random variables X.
6. For each of the following, find the constant c such that f(x) satisfies the conditions of the PMF for a random variables X. (a) f(x) = c(2/3) , x = 1, 2, ... (b) f(x) = ex, x = 1, 2, ..., 10

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