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fernandaElizondo
28.07.2019 •
Mathematics
The westerburg high school soccer team performs differently in the rain than they do when it doesn't rain. when it rains they have a 80% chance of winning, but when it doesn't rain they have a 50% chance of winning. given that there is a 20% chance of rain today, what is the probability that they lose their game?
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Ответ:
44%
Step-by-step explanation:
It is given that when it rains they have a 80% chance of winning, but when it doesn't rain they have a 50% chance of winning.
P(Rains-winning) = 0.8
P(Rains-losing) = 1 - 0.8 = 0.2
P(Doesn't Rains- winning) = 0.5
P(Doesn't Rains-losing) = 1 - 0.5 = 0.5
Given that there is a 20% chance of rain today. We need to find the probability that they lose their game.
P(Rain) = 0.2
P(No Rain) = 1 - 0.2 = 0.8
The probability that there is rain and they loss is:
The probability that there is no rain and they loss is:
The probability that they lose their game is
Therefore, the probability that they lose their game is 44%.
Ответ: