Chapter 14 Comparing Two Means

Question 1

How do we solve for standard deviation between two independent groups

Answer 1

Add their variances and then take the square root. Square root (Var-y1 + Var y2)

Question 2

What is the objective of this chapter?

Answer 2

We are looking at the difference between two sample means and comparing the difference with the population difference to see if this how the difference compares

Question 3

When do you use a independent sample t test?

Answer 3

You use an independent sample t test when you have two independent samples and are not given the facts about the population