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Chapter 5: Q 4.1. (page 323)
During World War II, the British found that the probability that a bomber is lost through enemy action on a mission over occupied Europe was Assuming that missions are independent, find the probability that a bomber returned safely from missions.
The probability is
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Ten percent of U.S. households contain or more people. You want to simulate choosing a household at random and recording whether or not it contains or
more people. Which of these are correct assignments of digits for this simulation? (a) Odd = Yes (or more people); Even = No (not or more people)
(b) = Yes; = No
(c) = Yes; = No
(d) All three are correct.
(e) Choices (b) and (c) are correct, but (a) is not.
The casino game craps is based on rolling two dice. Here is the assignment of probabilities to the sum of the numbers on the up-faces when two dice are rolled: pass line bettor wins immediately if either a or an comes up on the first roll. This is called a natural. What is the probability of a natural?
(a) (c) (e)
(b) (d)
Get rich A survey of randomly selected young adults (aged to ) asked, 鈥淲hat do you think are the chances you will have much more than a middle-class income at age ?鈥� The two-way table shows the responses.
Choose a survey respondent at random.
(a) Given that the person selected is male, what鈥檚 the probability that he answered 鈥渁lmost certain鈥�?
(b) If the person selected said 鈥渟ome chance but probably not,鈥� what鈥檚 the probability that the person is female? 
Urban voters The voters in a large city are white, black, and Hispanic. (Hispanics may be of any race in official statistics, but here we are speaking of political blocks.) A mayoral candidate anticipates attracting of the white vote, of the black vote, and of the Hispanic vote. Draw a tree diagram to represent this situation. What percent of the overall vote does the candidate expect to get? Use the four-step process to guide your work.
Role-playing games Refer to Exercise 39. Define event A: sum is . Find .
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