SOLUTION: It is estimated that 25% of all California adults are college graduates and that 30% of California adults are regular internet users. It is also estimated that 21% of California

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Question 1025696: It is estimated that
25% of all California adults are college graduates and that
30% of California adults are regular internet users. It is also estimated that
21% of California adults are both college graduates and regular internet users.
(a) What is the probability that a California adult is an internet user, given that he or she is a college graduate? Round your answer to 2 decimal places.
(b) Among California adults, what is the probability that a randomly chosen internet user is a college graduate? Round your answer to 2 decimal places.
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
(a) P(internet user|college graduate) = P(internet user ∩ college graduate) /P(college graduate) = 0.21/.25 = .84.
(b) P(college graduate|internet user) = P(internet user ∩ college graduate) /P(internet user) = 0.21/0.30 = 0.70.