18. Gender of College Students. In 2004, 57.2% of all enrolled college students were female. Choose one enrolled student at random. What is the probability that the student was male?

20. Rural Speed Limits. Rural Speed limits for all 50 states are indicated below.

60 mph 65 mph 70 mph 75 mph

1 (HI) 18 18 13

Choose one state at random. Find the probability that its speed limit is

Random state chosen – North Carolina

1. 60 or 70 miles per hour
2. Greater than 65 miles per hour
3. 70 miles per hour

22. Craps Gam. In the game of craps, a player loses on the roll if a 2, 3, or 12 is tossed on the first roll. Find the probability of losing on the first roll.

24. Computers in Elementary Schools. Elementary and secondary schools were classified by the number of computers they had. Choose one of these schools at random.

Computers 1-10 11-20 21-50 51-100 100+

Schools 3170 4590 16,741 23,753 34,803

Choose one school at random. Find the probability that it has

1. 50 or fewer computers
2. More than 100 computers
3. No more than 20 computers

26. Gasoline Mileage for Autos and Trucks. Of the top 10 cars and trucks based on gas mileage, 4 are Hondas, 3 are Toyotas, and 3 are Volkswagens. Choose one at random. Find the probability that it is

a. Japanese

b. Japanese or German

c. Not foreign

28. Sources of Energy Uses in the United States. A breakdown of the sources of energy used in the United States is shown below. Choose one energy source at random. Find the probability that it is

a. Not oil

b. Natural gas or oil

c. Nuclear

Oil 39%

Natural Gas 24%

Coal 23%

Nuclear 8%

Hydropower 3%

Other 3%

30. Federal Government Revenue. The source of federal government revenue for a specific year is

50% from individual income taxes

32% from social insurance payroll taxes

10% from corporate income taxes

3% from excise taxes

5% other

If a revenue source is selected at random, what is the probability that it comes from individual or corporate income taxes?

34. Family Dinner Combination. A family special at a neighborhood restaurant offers dinner for four for $19.99. There are 3 appetizers available, 4 entrees, and 3 desserts from which to choose. The special includes one of each. Represent the possible dinner combinations with a tree diagram.

40. Wheel Spinner. The wheel spinner shown hers is spun twice. Find the sample space, and then determine the probability of the following events:

6

4 . 1

3 2

1. An odd number on the first spin and an even number on the second spin.
2. A sum greater than 4.
3. A sum that is odd.
4. The same number on both spins.

Exercises 4-2

2. Determine whether these events are mutually exclusive:

a. Roll a die. Get an even number, and get a number less than 3.

b. Roll a die. Get a prime number (2, 3, 5), and get an odd number.

c. Roll a die. Get a number greater than 3, and get a number less than 3.

d. Select a student in your class: The student has blond hair, and the student has blue eyes.

e. Select a student in your college: The student is a sophomore and the student is a business major

f. Select any course: It is a calculus course, and it is an English course.

g. Select a registered voter: The voter is a Republican and the voter is a Democrat.

Price: $16.29

Solution: The downloadable solution consists of 7 pages, 929 words and 1 charts.
Deliverable: Word Document