Toss two fair coins and record the outcome. Find the probability of observing exactly one head...

Question

Question

Toss two fair coins and record the outcome. Find the probability of observing exactly one head in the two tosses.

Answer 1

Answer #1

Two fair coins are tossed.

The all possible outcome is {HH,HT,TH,TT}

That is 2 $^{}$ $^{}$ ^2 =4

We want the probability of exactly one head in two tosses.

So there is only two such outcome for this event ie {HT,TH}.

P(exactly one head) =2/4 = 1/2

Answer 2

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