Nine coins are tossed let x be the number of coins that

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(a) Nine coins are tossed. Let X be the number of coins that turn up heads. Find P(X = 4) and P(X = 6).

(b) A coin is tossed repeatedly until three heads are observed. (The three heads are not necessarily consecutive.) Let X be the number of tosses. Find P(X = 6) and P(X = 9).

Reference no: EM13629755

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