Education Technology

# Activities

• ##### Subject Area

• Math: Statistics: Inferential Statistics

9-12

40 Minutes

• ##### Device
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

1.7

## Hypothesis Testing: Means

#### Activity Overview

Students test a claim about a mean with a large sample size using the test statistic and the critical value. They also find the area under the curve to find the p value. Then, students will see how the result would change if they used a one-percent significance level or smaller sample size. An optional extension further allows students to study the importance of sample size.

#### Key Steps

• On page 1.8, students are to change the x-value of the plotted point to that of the test statistic. If desired, you can have students also plot the critical value by using the Point On tool to place a point on the x-axis, anywhere other than on a tick mark. Then use the Coordinates and Equations tool to display the coordinates and change the x-value to that of the critical value. You can then use this diagram as a tool for discussion of critical values.