Education Technology

Statistics: Comparing Two Means

by Texas Instruments


Students test hypotheses concerning means of two populations by calculating the test statistic and the critical values and graphing the critical region.

Key Steps

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    Students calculate the test statistic using the given formula on the worksheet. They will determine the critical value by using the invNorm command from the DISTR menu.

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    Comparing the test statistic and critical value, students decide whether to reject or fail to reject the null hypothesis. Then they use the ShadeNorm command to find the P-value, confirming their decision about the hypothesis.

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    At the end of this activity, students will be able to compare two means for a real-life scenario. They calculate the test statistics, critical values, and P-values. They will also learn to use the 2-SampZTest command to calculate the P-value instead of the ShadeNorm command.