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Chapter 5: Q. 28 (page 313)
Ten percent of U.S. households contain or more people. You want to simulate choosing a household at random and recording “Yes” if it contains or more people. Which of these is a correct assignment of digits for this simulation?
a.
b.
c.
d.
e. None of these
The correct option is (b).
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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 “Yes” if it contains or more people. Which of these is a correct assignment of digits for this simulation?
a.
b.
c.
d.
e. None of these
If I toss a fair coin five times and the outcomes are , then the probability that tails appear on the next toss is
a. .
b. less than .
c. greater than .
d. .
e. .
The security system in a house has two units that set off an alarm when motion is
detected. Neither one is entirely reliable, but one or both always go off when there is
motion anywhere in the house. Suppose that for motion in a certain location, the
probability that detector A goes off and detector B does not go off is , and the
probability that detector A does not go off is . What is the probability that detector
B goes off?
Rock smashes scissors Almost everyone has played the game rock-paper-scissors at some point. Two players face each other and, at the count of , make a fist (rock), an extended hand, palm side down (paper), or a “V” with the index and middle fingers (scissors). The winner is determined by these rules: rock smashes scissors; paper covers rock; and scissors cut paper. If both players choose the same object, then the game is a tie. Suppose that Player and Player are both equally likely to choose rock, paper, or scissors. a. Give a probability model for this chance process. b. Find the probability that Player wins the game on the first throw .
Which of the following is a correct way to perform the simulation?
a. Let integers from represent making a free throw and represent missing a free throw. Generate random integers from. Count the number
of made free throws. Repeat this process many times.
b. Let integers from represent making a free throw and represent missing a free throw. Generate 50 random integers from 1 to 50 with no repeats
allowed. Count the number of made free throws. Repeat this process many times.
c. Let integers fromrepresent making a free throw and represent missing a free throw. Generate 50 random integers fromCount the number of made free throws. Repeat this process many times.
d. Let integers from localid="1653986588937" represent making a free throw and localid="1653986593808" represent missing a free throw. Generate 50 random integers from localid="1653986598680" with no repeats allowed. Count the number of made free throws. Repeat this process many times.
e. None of the above is correct.
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