Education Technology

# Activities

• ##### Subject Area

• Math: Statistics: Statistical Inference

9-12

50 Minutes

• ##### Device
• TI-84 Plus Silver Edition
• TI-84 Plus C Silver Edition
• TI-84 Plus CE

## The t-test

#### Activity Overview

Students will practice t-test calculations using their TI-84 technology, just as they will be required to do so during examinations.

#### Objectives

• Students will discuss scenarios when best to use a t-test.
• Students will practice writing their null and alternative hypotheses.
• Students will decide between one and two tailed tests, finding the t-value and p-value with the handheld, and stating their conclusions.

#### Vocabulary

•  t-test
• normally distributed
• variance
• hypotheses
• pooled data
• p-value

#### About the Lesson

Students will be given several examples of data. They will do the following for each

example:

• Write down the null and alternative hypotheses.
• State whether the example is a one-tailed or a two-tailed test.
• Using the handheld, students will find the t-value and   p-value for a 2 sample t-test at the 5% significance level.
• Write down the conclusion to the test.