Question: 4.27. Referring to Example 4.10, (a) evaluate P(X = 2) if n = 4, - (b) for arbitrary n, show that P(X = n 1)

4.27. Referring to Example 4.10,

(a) evaluate P(X = 2) if n = 4, -

(b) for arbitrary n, show that P(X = n 1) = P(exactly one unsuccessful attempt) is equal to [1/(n + 1)] -1(1/0).

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