Mth 540 Week 3 Quiz

1. Question : Match the proposed probability of A with the appropriate verbal description.

P(A) =.02

Student Answer: An incorrect assignment.

Very likely to happen

No chance of happening

Very little chance of happening

Points Received: 1 of 1

Comments:

2. Question : A letter is chosen at random from the word "JOHN". What is the probability that it is a vowel?

Student Answer:

0.25

0.50

0.40

0.33

Points Received: 1 of 1

Comments:

3. Question : Fifteen persons reporting to a Red Cross center one day are typed for blood, and the following counts are found:

Blood group O A B AB

No.of persons 2 5 7 1

If one person is randomly selected, what is the probability that this person's blood group is: AB?

Student Answer: 2/15

3/5

1/15

½

Points Received: 1 of 1

Comments:

4. Question : For two events A and B, the following probabilities are given.

Use the appropriate laws of probability to calculate:

P(A) = 0.6, P(B) = 0.25, P(A | B) = 0.8

Student Answer: 0.25

0.5

0.4

1.0

Points Received: 1 of 1

Comments:

5. Question : For two events A and B, the following probabilities are given.

P(A) = 0.3, P(B) = 0.35, P(A | B) = 0.6

Use the appropriate laws of probability to calculate P(A ∪ B) .

Student Answer:

0.45

0.53

0.44

0.73

Points Received: 0 of 1

Comments:

6. Question : Of 12 available candidates for membership in a university committee, five are men and seven are women. The committee is to consist of four persons. How many different selections of the committee are possible?

Student Answer:

210

330

495

350

Points Received: 0 of 1

Comments:

7. Question : Of 12 available candidates for membership in a...