Ch 9.3 Lesson

What will be the degrees of freedom? The sample size is 20.

• 20

• 18

• 19

This is a two tail test. What do you need to do when you have a two tail test for the p-value?

• divide it in half

• multiply it by 2

• nothing, the value you find is the p-value.

What alpha column will you use to find the critical value where alpha = 0.05.

• 0.025

• 0.05

• 0.10

If the p-value is less than the alpha value, what is the conclusion?

• There is not enough evidence and do not reject the null.

• There is enough evidence and reject the null.

• Not enough information to make a decision.