Hypothesis Testing

Table of Contents

Hypothesis Testing

Big picture

Two ways to learn about a population

Confidence Intervals

Hypothesis Testing

General Idea of Hypothesis Testing

Example: Grade inflation?

Making the Decision

Making the Decision (cont’d)

Idea of Hypothesis Testing: Criminal Trial Analogy

An aside:Identification of hypotheses

Criminal Trial Analogy (continued)

Criminal Trial Analogy(continued)

Criminal Trial Analogy(continued)

Important “Boohoo!” Point

Errors in Criminal Trials

Errors in Hypothesis Testing

Definitions: Types of Errors

Example: Putting it all together

Example (continued)

Using the p-value to make the decision

Example (continued)

Example (continued)

What type of error might we have made?

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