SOLUTION: From past experience, Anna knows that the probability that her friend will take her to dinner in Lawiswis is 0.7, the probability that they will watch movies is 0.5, and the probab

Algebra ->  Probability-and-statistics -> SOLUTION: From past experience, Anna knows that the probability that her friend will take her to dinner in Lawiswis is 0.7, the probability that they will watch movies is 0.5, and the probab      Log On


   

Question 1050053: From past experience, Anna knows that the probability that her friend will take her to dinner in Lawiswis is 0.7, the probability that they will watch movies is 0.5, and the probability that he will take her to dinner or they will watch movies is 0.9. What is the probability that (1) they will do both? (2) they will do neither?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!

(1) 0.7 + 0.5 - 0.9 = 0.3
(2) 1 - 0.9 = 0.1