Question

1. In hypothesis testing, which hypothesis do we test?
   1. Experimental
   2. Research    
   3.   Alternative
   4.    Null
2. As part of your research, you have developed the following hypothesis to test: “there will be no association between residents’ socioeconomic status and level of education”. What type of hypothesis is this?
   1. One tailed   
   2.   Alternative   
   3. Directional    
   4. Two tailed
3. What do we call the situation where we believe there is a genuine effect in our population when in fact there is not?
   1. Type II error
   2. Type I error    
   3. Standard error     
   4. Type III error
4. An independent t-test is used to identify:

A. Difference in means between groups containing different people when the data are normally distributed, have equal variances and data are at least interval.

B. Difference in means between groups containing different people when the data are not normally distributed, or have unequal variances.

C. Difference in means between groups containing the same people when the data are normally distributed, have equal variances and data are at least interval.

D. Difference in means between groups containing different people when the data are not normally distributed or have unequal variances.

5. A dependent t-test is used to identify:

a. Difference in means between groups containing different people when the data are normally distributed have equal variances and data are at least interval.

b. Difference in means between groups containing different people when the data are not normally distributed or have unequal variances.

c. Difference in means between groups containing the same people when the data are normally distributed have equal variances and data are at least interval.

d. Difference in means between groups containing different people when the data are not normally distributed or have unequal variances.

6. A repeated-measures design (matched-pairs) would be appropriate for which of the following situations?

a. A researcher would like to study the effect of advanced training on sales figures.

b. A researcher would like to compare individuals from at least two populations.

c. The effect of a new initiative is studied in a small group of individuals with rare skills.

d. Both a and b.

7. Which of the following is an independent-measures design?

a. All participants perform in every condition

b. Each participant is tested twice, once in each condition

c. Different participants perform in each condition

d. None of the above

Answer 1

In hypothesis testing, which hypothesis do we test

Answer : Alternative

As part of your research, you have developed the following hypothesis to test: “there will be no association between residents’ socioeconomic status and level of education”. What type of hypothesis is this?

Answer : Directional    

What do we call the situation where we believe there is a genuine effect in our population when in fact there is not?

Answer Type I error

An independent t-test is used to identify:

Amswer : Difference in means between groups containing different people when the data are not normally distributed or have unequal variances.

A dependent t-test is used to identify:

Answer). Difference in means between groups containing the same people when the data are normally distributed have equal variances and data are at least interval.

A repeated-measures design (matched-pairs) would be appropriate for which of the following situations?

a. A researcher would like to study the effect of advanced training on sales figures.

Answer. Both a and b.

Which of the following is an independent-measures design?

Answer. All participants perform in every condition