Reference no: EM132467946

Assignment: A minimum of 150 words each question and References (questions #1- 7) keep question with answer each questions need to have a scholarly source with a Hyperlink

1. Lay out the design for two between-subjects experiments: a) an experiment involving an experimental group and a control group, and b) a factorial design with three independent variables that have three, and two levels respectively.

2. Discuss some of the advantages of using a between-subjects design.

3. Compare and contrast:

• Between-subjects with within-subjects designs

• Small N designs with large N designs.

In what circumstances would you use the within-subjects design and in what circumstances would you use the large N design?

4. Discuss how to minimize the problems of fatigue, boredom, or practice effects in within-subject designs.

5. Since obtaining statistical significance is easier to obtain with a directional hypothesis (one-tailed test) than with a non-directional hypothesis (two-tailed test), why would anyone ever design a study with a nondirectional hypothesis?

6. Explain the purpose of a null hypothesis. Why are both a research/alternative hypothesis and a null hypothesis necessary in statistics?

7. How can internal and external validity be increased in an experiment?