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