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math11quiz3

# math11quiz3 - MATH 11 Spring 2008 QUIZ 3 NAME(Total 20...

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Unformatted text preview: MATH 11 Spring 2008 QUIZ 3 NAME: (Total 20 points) 1. (12 points) (a) (3 points) What is the probability of an impossible event? A = “\$30390on ENENK (30% =7 Q5 (b) (3 points) On a multiple-choice test with fog]: possible answers for each question, what is the probability of answering a question correctly if you make a random guess? (:5: We: QN%N‘EP ‘ my “a (c) (3 points) If a die is rolled o_n_e time, what is the probability of getting an eifli number? 5 ma mmﬂl ' C“ e g 3/ = \/ HQ {9 2 s (d) (3 points) If a card is drawn from a standard deck of 52 cards, what is the probability of getting an ace? = - cc ‘ r _ D A m} : 4/62. ~ “A; 2. (8 points) Suppose you randomly select a couple with two children. Assume that births of boys and girls are equally likely and that the gender of any child is not inﬂuenced by the gender of the other child. . (a) (5 points) Construct the sample space for this problem._ S :%66138,<73,@G} (b) (3 points) What is the probability that the couple has exactly one boy among two children? A= emacig 1 boy PUD *1 2M = ‘12. ...
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