Question: In an evaluation procedure, n items are ranked in order of effectiveness. No ties are allowed, so that the ranks are the positive integers from

In an evaluation procedure, n items are ranked in order of effectiveness. No ties are allowed, so that the ranks are the positive integers from 1 to n. Suppose that all of the possible rankings are equally likely.
(a) What is the probability mass function of the rank of a particular item?
(b) What is the expectation of the rank of a particular item?
(c) What is the variance of the rank of a particular item?

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