f6M1數學題一問?10點

2011-09-26 5:12 am
Tom and John are playing game Rock, Scissors & Paper

probabilities of their outcomes are Rock, Scissors & Paper
Tom 0.2 0.5 0.3
John 0.4 0.3 0.3

find probability that John will win the game

回答 (1)

2011-09-26 8:13 am
✔ 最佳答案
P(John wins)=P(John outcome is Rock) * P(Tom outcome is Scissors)
+ P(John outcome is Scissors) * P(Tom outcome is Paper)
+ P(John outcome is Paper) * P(Tom outcome is Rock)= 0.4 * 0.5
+ 0.3 * 0.3
+ 0.3 * 0.2= 0.35


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