PSY 555 Homework 12

Chapter 8: #1,3,7,8,9,15

1. Describe, in words, alpha, beta, and power.

2. State five ways you can increase power.

3. A population has a m=20 and s=5. We have obtained a sample with a and sd=3 and want to test to see if it came from this population. If we conduct a one-tailed test with a=.05, what is b?