In Laboratory Exercise 7, you came up with certain details for two studies. Choose one of those studies for this assignment.

1. State the hypothesis you propose to test (item 5 of LE 7), and whether it is directional or non-directional (item 6 of LE 7). (2 pts)

2. What is your independent variable? (3 pts)

3. Will you use a between-subjects or a within-subjects (repeated-measures) design? (2 pts)

4. If between, how will you assign people to groups? If within, in what order will you expose your participants to the conditions? (4 pts)

5. What is your dependent variable? (3 pts)

6. How will you measure this? (4 pts)

7. What statistic will you use to test your hypothesis? (2 pts)

LAB 7- this is the study.

Study 1
1. What are your two groups?	lives in hours of 2 batches of electric lamps
2. What is the variable you will test?	length of life of an electric lamp.
3. State your null hypothesis using the notation shown in the book.	Nullhypothesis,H 0 : 1 = 2 where, i =averagelivesforlampsinthepopulationcorrespondingtoBatchi;i=1,2.
4. State your alternative hypothesis using the notation shown in the book.	Alternativehypothesis,H 1 : 1 = 2
5. Verbally describe your hypothesis.	There is a difference in the average length of life between the two batches.
6. Is your alternative hypothesis one-tailed (directional) or two-tailed (non-directional)?	Hence it is two-tailed (i.e. non-directional) test.