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Varvara68 [4.7K]
3 years ago
6

Probability trees. Can someone tell me how im meant to set this one out, and I can work the rest out from there

Mathematics
2 answers:
viktelen [127]3 years ago
8 0

Answer:

.8 = P (laura)    

Step-by-step explanation:

Sally passes is .7

both passing is .56

P(sally and laura passing) = P(sally) * P(laura)

                  .56                   = .7 *  P(laura)

Divide each side by .7

.56/.7 =            .7 *  P(laura)/ .7

.8 = P (laura)            

Vitek1552 [10]3 years ago
4 0

Answer:

Step-by-step explanation:

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