If a fair coin is tossed 5 times, what is the probability that we see exactly...

Question

Question

If a fair coin is tossed 5 times, what is the probability that we see exactly 3 heads?

a. 0.5000

b. 0.3125

c. 0.8125

d. 0.1875

Answer 1

Answer #1

Probability of head = 0.5

n = 5

P(x=3)

=P ( X = 3 ) = C(5,3) * 0.5^3 * (1-0.5)^2 = 0.3125

b. 0.3125

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Answer 2

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