# Question: Multiple choice questions 1 The random variable x2 assumes only a Positive b

Multiple choice questions:

1. The random variable x2 assumes only

a. Positive

b. Nonnegative

c. Non-positive values

2. The parameter(s) of the chi-square distribution is (are)

a. Degrees of freedom

b. df and n

c. x2

3. Which of the following is not a characteristic of a multinomial experiment?

a. It consists of n identical trials.

b. There are k possible outcomes for each trial and k 2.

c. The trials are random.

d. The trials are independent.

e. The probabilities of outcomes remain constant for each trial.

4. The observed frequencies for a goodness-of-fit test are

a. The frequencies obtained from the performance of an experiment

b. The frequencies given by the product of n and p

c. the frequencies obtained by adding the results of a and b

5. The expected frequencies for a goodness-of-fit test are

a. The frequencies obtained from the performance of an experiment

b. The frequencies given by the product of n and p

c. The frequencies obtained by adding the results of a and b

6. The degrees of freedom for a goodness-of-fit test are

a. n = 1

b. k – 1

c. n + k – 1

7. The chi-square goodness-of-fit test is always

a. Two-tailed

b. Left-tailed

c. Right-tailed

8. To apply a goodness-of-fit test, the expected frequency of each category must be at least

a. 10

b. 5

c. 8

9. The degrees of freedom for a test of independence are

a. (R – 1)(C – 1)

b. n – 2

c. (n – 1)(k – 1)

1. The random variable x2 assumes only

a. Positive

b. Nonnegative

c. Non-positive values

2. The parameter(s) of the chi-square distribution is (are)

a. Degrees of freedom

b. df and n

c. x2

3. Which of the following is not a characteristic of a multinomial experiment?

a. It consists of n identical trials.

b. There are k possible outcomes for each trial and k 2.

c. The trials are random.

d. The trials are independent.

e. The probabilities of outcomes remain constant for each trial.

4. The observed frequencies for a goodness-of-fit test are

a. The frequencies obtained from the performance of an experiment

b. The frequencies given by the product of n and p

c. the frequencies obtained by adding the results of a and b

5. The expected frequencies for a goodness-of-fit test are

a. The frequencies obtained from the performance of an experiment

b. The frequencies given by the product of n and p

c. The frequencies obtained by adding the results of a and b

6. The degrees of freedom for a goodness-of-fit test are

a. n = 1

b. k – 1

c. n + k – 1

7. The chi-square goodness-of-fit test is always

a. Two-tailed

b. Left-tailed

c. Right-tailed

8. To apply a goodness-of-fit test, the expected frequency of each category must be at least

a. 10

b. 5

c. 8

9. The degrees of freedom for a test of independence are

a. (R – 1)(C – 1)

b. n – 2

c. (n – 1)(k – 1)

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