Verify that f(x) 2x k(k 1) for x 1, 2, 3, , k can serve as the probability distribution of a random variable with the given range ...

Verify that f(x) = 2x/k(k+ 1) for x = 1, 2, 3, . . . , k

Question:

Verify that f(x) = 2x/k(k+ 1) for x = 1, 2, 3, . . . , k can serve as the probability of a random variable with the given range.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...