Exercises(Ch. _ 5)
152
Ghapter 5
Exercises
Some people are in favor of reducing federal taxes to increase consumer spending and others are against it. Two persons are selected and their opinions are recorded. Assuming no one is undecided, list the possible outcomes.
2. A quality control inspector selects a part to be tested. The part is then declared acceptable, repairable, or scrapped. Then another part is tested. List the possible outcomes of this experiment regarding two parts. tGE 3. A.r."y of 54 students at the Wall College of Business showed the following majors:
1.
Accounting
10
Finance
Economics
Management
Marketing
5
3
6
10
Suppose you select a student and observe his or her maior.
a. What is the probability he or she is a management major?
b. Which concept of probability did you use to make this estimate?
4. A large company that must hire a new president prepares a final list of five candidates, all of whom are equally qualified. Two of these candidates are members of a minority group.
To avoid bias in the selection of the candidate, the company decides to select the president
by lottery.
a. What is the probability one of the minority candidates is hired?
b. Which concept of probability did you use to make this estimate?
5. ln each of the following cases, indicate whether classical, empirical, or subjective probability is used.
a. A baseball player gets a hit in 30 out of 100 times at bat. The probability is.3 that he gets a hit in his next at bat.
b. A seven-member committee of students
is formed to study environmental issues. What is the likelihood that any one of the"seven is chosen as the spokesperson?
c. You purchase one of 5 million tickets sold for Lotto Canada. What is the likelihood you will win the $1 million jackpot?
d. The probability of an earthquake in northern California in the next 10 years above 5.0 on the Richter Scale is .80.
6. A firm will promote two employees out of a group of six men and three women.
a. List the chances of this
Ghapter 5
Exercises
Some people are in favor of reducing federal taxes to increase consumer spending and others are against it. Two persons are selected and their opinions are recorded. Assuming no one is undecided, list the possible outcomes.
2. A quality control inspector selects a part to be tested. The part is then declared acceptable, repairable, or scrapped. Then another part is tested. List the possible outcomes of this experiment regarding two parts. tGE 3. A.r."y of 54 students at the Wall College of Business showed the following majors:
1.
Accounting
10
Finance
Economics
Management
Marketing
5
3
6
10
Suppose you select a student and observe his or her maior.
a. What is the probability he or she is a management major?
b. Which concept of probability did you use to make this estimate?
4. A large company that must hire a new president prepares a final list of five candidates, all of whom are equally qualified. Two of these candidates are members of a minority group.
To avoid bias in the selection of the candidate, the company decides to select the president
by lottery.
a. What is the probability one of the minority candidates is hired?
b. Which concept of probability did you use to make this estimate?
5. ln each of the following cases, indicate whether classical, empirical, or subjective probability is used.
a. A baseball player gets a hit in 30 out of 100 times at bat. The probability is.3 that he gets a hit in his next at bat.
b. A seven-member committee of students
is formed to study environmental issues. What is the likelihood that any one of the"seven is chosen as the spokesperson?
c. You purchase one of 5 million tickets sold for Lotto Canada. What is the likelihood you will win the $1 million jackpot?
d. The probability of an earthquake in northern California in the next 10 years above 5.0 on the Richter Scale is .80.
6. A firm will promote two employees out of a group of six men and three women.
a. List the chances of this