SOLUTION: A biased coin is tossed twice. This coin has a 90% chance of landing heads up. What is the probability that the result is a. Two heads? b. One head?

Question 214910: A biased coin is tossed twice. This coin has a 90% chance of landing heads up. What is the probability that the result is
a. Two heads?
b. One head?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A biased coin is tossed twice. This coin has a 90% chance of landing heads up. What is the probability that the result is
a. Two heads?
P(h and h) = 0.9*0.9 = 0.81
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b. One head?
P(one head) = 0.9*0.1 + 0.1*0.9 = 0.09 + 0.09 = 0.18
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Cheers,
Stan H.
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