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Chapter 5: Q .80. (page 338)
Sampling students A statistics class with 30 students has 10 males and 20 females. Suppose you choose 3 of the students in the class at random. Find the probability that all three are female.
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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. .
Suppose that a student is randomly selected from a large high school. The probability
that the student is a senior is The probability that the student has a driver鈥檚 license
is . If the probability that the student is a senior or has a driver鈥檚 license is ,
what is the probability that the student is a senior and has a driver鈥檚 license?
Grandkids Mr. Starnes and his wife have grandchildren: Connor, Declan, Lucas, Piper, Sedona, and Zayne. They have extra tickets to a holiday show, and will randomly select which grandkids get to see the show with them.
a. Give a probability model for this chance process.
b. Find the probability that at least one of the two girls (Piper and Sedona) get to go to the show.
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.
Reading the paper In a large business hotel, of guests read the Los Angeles Times. Only read the Wall Street Journal. Five percent of guests read both papers. Suppose we select a hotel guest at random and record which of the two papers the person reads, if either. What鈥檚 the probability that the person reads the Los Angeles Times or the Wall Street Journal?
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