417 Precalculus Name Probability Unit II Review Sheet Date Period ...

Page 4c. 1 red card and 1 spade c. ___________________in any order selected without replacementd. 1 red card and 1 spade d. ___________________in that order selected without replacement11. Mary turns on the T.V. The probability that the T.V. is HBO is 1/3, and the probability that it ison TMC is 4/13. What is the probability that it is on either HBO or TMC?11.12. Larry’s car will not start. Based upon past experience, Larry knows that the probabilitythat it is the battery is 0.65, the probability that it is the automatic choke on the carburetoris 0.45, and the probability that it is both is 0.24. Find the probability that it is eitherof these two problems.12.

13. In a certain community, the probability that a married man is a college graduate is 5/14.The probability that his wife is a college graduate is 3/7, and the probability that both thehusband and wife are college graduates is 1/7.What is the probability that either a manor his wife are college graduates in this community?Page 513.14. A batter is now batting .200. In the next five times at bat, what is the probability of havingexactly 3 hits?14.15. A coin is tossed four times. What is the probability of getting 2 heads and 2 tails?15.

16. If a tack is dropped, the probability that it will land point up is 2/5. Ten tacks are dropped.What is the probability of exactly 3 landing point up?Page 616.17. Mario is taking a multiple choice exam which consists of 5 questions. Each question has 4possible answers. Mario guesses at every answer. What is the probability that he passes theexam if he needs at least 4 correct answers to pass?17.