Assignment: Applying Hypothesis Testing

For this discussion, answer the following questions:

• What is a null hypothesis?

• What is an alternative hypothesis?

Then articulate a null hypothesis and alternative hypothesis for a research study that pertains to your area of specialization.

• What conclusions can be drawn from this study with a "statistically significant" result?

OBJECTIVES

To successfully complete this learning unit, you will be expected to:

1. Analyze case studies of Type I and Type II errors.

2. Analyze case studies of null hypothesis testing.

Unit 4 Study 1 - Readings

Use your Warner text, Applied Statistics: From Bivariate Through Multivariate Techniques , to complete the following:

• Read Chapter 3, "Statistical Significance Testing," pages 81-124. This reading addresses the following topics:

- The logic of null hypothesis testing.

- Type I and Type II errors.

- The z test.

- Null hypothesis and alternative hypothesis.

- Limiting Type I error.

- Effect size.

- Statistical power.