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 Jul 4, 2020
 #1
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The probability of winning plus the probability of losing is 1.000.

 

So, if his probability of winning at Hoopla is 0.3, his probability of losing at Hoopla is 0.7.

And, if his probability of winning at Darts is 0.4, his probability of losing at Darts is 0.6.

[These numbers should help you complete the chart.]

 

The probability that he wins at both games

  =  the probability that he wins at Hoople  times  the probability that he wins at darts

  =                            0.3                                 x                           0.4                                    =  0.12

 

The probability that he wins at just one of the games

  =  the probability that he wins at Hoople  times  the probability that he loses at darts

  =                              0.3                               x                           0.6                                    =   0.18

plus

  =  the probability that he loses at Hoople  times  the probability that he wins at darts

  =                              0.7                                x                           0.4                                   =  0.28

Adding these together:  0.18 + 0.28  =  0.46

 Jul 4, 2020

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