Education Technology

Hypothesis Testing: Means

Published on 01/24/2012

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

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    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.