Solved > Multiple Choice Questions   1. The null hypothesis:1546322 …

Multiple Choice Questions

 

1. The null hypothesis states that:

a. no specific relationship is being tested.

b. two samples have been drawn from populations with different means.

c. two samples have been drawn from the same population.

d.

 

2. Choose the correct statement:

a. if the null hypothesis is true, there is no difference between population means.

b. if the null hypothesis is false, the samples are considered the same.

c. if the null hypothesis is true, there is a difference between population means.

d. will never be equal to

 

3. When we retain the null hypothesis, we:

a. claim that a significant difference exists between groups.

b. have obtained a t-value greater than our critical t-value.

c. have committed a Type 1 error.

d. conclude that sampling error is responsible for our obtained difference.

 

4. The research hypothesis states:

a. no specific relationship is being tested.

b. two samples have been drawn from populations with different means.

c. two samples have been drawn from the same population.

d.

 

5. Which of the following exemplifies a research hypothesis?

a. Men and women have different levels of income

b. White and African Americans watch the same amount of TV.

c. Senior citizens driving behaviors do not differ from those of teenagers.

d. Liberals and conservatives have the same voting rates.

 

6. Which of the following does NOT exemplify a research hypothesis:

a. Southern states are more socially conservative than northern states.

b. Men are less monogamous than woman.

c. Drivers of SUV’s have the same personality type as drivers of pickup trucks.

d. High school graduates are more conservative than college graduates.

 

7. The sampling distribution of differences between means approximates a normal cure whose __________ is zero.

a. mode

b. median

c. mean

d. standard deviation

 

8. When we test hypotheses of differences between means, we:

a. compare our results to that of a probability distribution.

b. test to see if our obtained difference could have happened by chance.

c. calculate a type of z score to locate our difference on a probability distribution.

d. All of the above are correct.

 

9. Which statement is true of α (alpha)?

a. Conventionally, social researchers set α = .05.

b. Alpha increases as our sample size decreases.

c. Stringent levels of α can provide absolute certainty.

d. All of the above are true.

 

10. As β (beta) decreases:

a. the probability of making a Type II error increases.

b. the probability of making a Type I error increases.

c. the probability of retaining the null hypothesis increases.

d. the probability of rejecting the null hypothesis decreases.

 

 

 

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