Topic 9: Hypothesis Testing - Two Sample Test

This chapter introduces students to hypothesis testing with two samples.

• practice hmwk - Hypothesis Testing - Two Samples

• practice hmwk - Hypothesis Testing - Two Samples-KEY

Objectives Check

1. Identify and cite examples of situations in which the two-sample test of hypothesis is appropriate.

2. Explain the logic of hypothesis testing as applied to the two-sample case.

3. Explain what an independent random sample is.

4. Perform a test of hypothesis for two sample means or two sample proportions following the five-step model and correctly interpret the results.

5. List and explain each of the factors (especially sample size) that affect the probability of rejecting the null hypothesis. Explain the differences between statistical significance and importance.

6. Use SPSS to conduct a test of significance for the difference between sample means.