PreClass Questions(PCQ) - 8

Your student ID:
Your class nickname:

1.	What is similar or in common between the formulas for the z test, one sample t test, dependent t test and the independent t tests?

2.	A researcher is interested in running a study that looks at the effect of drinking alcohol on cognitive functioning. Briefly describe an experimental design that would be analyzed by a 1) dependent t test and 2) a 1-way ANOVA.

3.	Using an independent t test with a large effect size, under which of the four conditions described would power tend to be the greatest?
		A.	2-tailed, N1=40,  N2=40
		B.	1-tailed, N1=10, N2=10
		C.	1-tailed, N1=20, N2=80
		D.	1-tailed, N1=50, N2=50

4.  Identify a concept that was difficult for you to understand from the reading or lecture in this chapter? Do you have a Comment or Question?
Honor Code:		I did not receive help from anyone on this assignment.
		I did receive help from someone on this assignment.

Revised: September 23, 2001.