Author:
Rachel Orr-Depner

-Demonstrate how to compare independent means using a 2-sample t-test

-Review assumptions and conditions

-Present how to calculate the p-value from the t-distribution using the appropriate degrees of freedom using a graphing calculator

This learning packet will demonstrate how to perform a 2-sample t-test to determine if there is a significant difference between two independent quantitative variables. In this experiment, we will be testing if there is a significant difference in gender ability on Wii's Guitar Hero.

Tutorial

Central Limit Theorem

Histograms

Hypothesis Testing

Null Hypothesis and Alternative Hypothesis

Interpreting p-values

Student's t-distributions and degrees of freedom

Experimental Design

In this video, I set up the null and alternative hypothesis, review the conditions and assumptions that need to be satisfied in order to perform a 2-sample t-test, and introduce the 2-sample t-test equation.

Source: Rachel Orr-Depner

In this video, I run through a few slides showing how I select my subjects, collect my data, provide my summary statistics, create histograms from each sample, and check my assumptions and conditions.

Source: Rachel Orr-Depner

In this video I perform a two-sample t-test and make a conclusion about our hypothesis at a a significance level of 5%.

Source: Rachel Orr-Depner