1. Some of the candidates for president of the computer club at Riverdale High are seniors, and...

Question:

1. Some of the candidates for president of the computer club at Riverdale High are seniors, and the rest are juniors. Let J be the event in which a junior is elected, and let F be the event in which a female is elected. Describe the following events:
a. J ∩ F'
b. (J ∩ F)'
c. J ∪ F'
2. Suppose that E and F are events with Pr(E) = .4, Pr(F) = .3, and Pr(E ∪ F) = .5. Find Pr(E ∩ F).