Find the indicated probability.

If you choose a card at random from a well-shuffled deck, what is the probability of getting a face card or a spade

25/52

9/26

11/26

1/22

6.67 points

QUESTION 7

Resolve the problem.

There are 6 members on a board of directors. If you have to elect a president, a secretary, and a treasurer, how many different candidate lists are possible?

twenty

120

720

216

6.67 points

QUESTION 8

Find the mean of the given probability distribution.

The number of golf balls requested by customers of a pro shop has the following probability distribution.

6.99

7.86

9

9.66

6.67 points

QUESTION 9

Find the indicated probability. Round to the nearest thousandth.

In a batch of 8,000 clock radios 5% are defective. A sample of 14 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of the tested is defective. What is the probability that the entire lot will be rejected?

0.0714

0.512

0.488

0.05

6.67 points

QUESTION 10

A die is thrown with the faces numbered from 1 to 6, perfectly balanced. Give the probability that an even number will come up.

1/2

4/6

1/6

None of the above.

6.67 points

QUESTION 11

The following table shows the smoking habits of a sample of Keizer students. Use this table to answer questions 9-12.

NON-SMOKING SEX (C)

REGULAR SMOKER (D)

EXCESS SMOKER (E) TOTAL

Male (A) 135 13 5 153

Female (B) 187 21 9 217

Total 322 34 14 370

Give the probability that by selecting a student at random, she is a regular smoker.

21/34

13/34

34/370

13/370

6.67 points

QUESTION 12

Evaluate the expression:

10P4

3. 4

210

5040

6

6.67 points

QUESTION 13

Find the indicated probability. Round to three decimal places.

At a certain university, 33% of physics students belong to ethnic minorities. If 10 students are randomly selected from the physics students, what is the probability that no more than 6 are from an ethnic minority?

0.913

0.055

0.982

0.913

6.67 points

QUESTION 14

A die is rolled with the faces numbered from one to six, perfectly balanced.

Give the probability that an even number will come up.

1/2

1/6

4/6

3/6

6.67 points

QUESTION 15

The probability of the true event is: