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If Nicole is playing in a tennis match and the probability that she wins a given point is P(Nicole wins a point) = f, what is the probability that Nicole wins eight points in a row?

If Nicole is playing in a tennis match and the probability that she loses a given point is P(Nicole loses a point) = f, what is the probability that Nicole loses nine points in a row?

Two players, Blake and Nicole, are playing tennis. The probability that Blake wins a point is P(Blake wins a point) = 0.2, and the probability that Nicole wins a point is P(Nicole wins a point) = 0.8. What is the probability that after four points, Blake will have won the game? Round your answer to the nearest thousandth, if necessary.

User BitPusher
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Final answer:

The probability that Nicole wins eight points in a row is f^8, and the probability that Nicole loses nine points in a row is f^9. For Blake to win the game after four points, when his probability of winning a point is 0.2, the probability is 0.2^4 or 0.002 when rounded to the nearest thousandth.

Step-by-step explanation:

If Nicole is playing in a tennis match and the probability that she wins a given point is P(Nicole wins a point) = f, the probability that Nicole wins eight points in a row would be f^8 where f is the probability of her winning a single point. Conversely, if the probability that Nicole loses a given point is also f, then the probability that Nicole loses nine points in a row would be f^9.

When considering the match between Blake and Nicole, if the probability that Blake wins a point is P(Blake wins a point) = 0.2, and the probability that Nicole wins a point is P(Nicole wins a point) = 0.8, the probability that after four points Blake will have won all of them (and therefore the game) would be 0.2^4 or 0.0016 which rounds to 0.002 when rounded to the nearest thousandth.

User Frodik
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