Statistical Significance and Null Hypothesis Worksheet

Objective

• Answer the following questions in complete sentences about statistical significance and null hypothesis

Statistical Significance and Null Hypothesis

Describe how probability can identify differences between groups that are not due to chance.

Describe why one cannot control for a Type I error.

Describe how a significant level is referred to as the level of risk you are willing to take.

Describe the null hypothesis.

Describe what happens when you make a Type I error.

Describe the three commonly reported levels for statistical significance when testing the null hypothesis.

Submit the completed Statistical Significance and Null Hypothesis Worksheet and a 1- to 2-page paper in which you respond to the following:

• Describe the level of statistical significance.
• Describe a null hypothesis.
• Identify Type I and Type II errors, and explain which error you think is worse.