The purpose of this activity is to give you guided practice in obtaining and interpreting a 95% confidence interval for μ_{1} − μ_{2} following a two-sample T-test that rejected H_{0}. Recall our second example:

### Instructions

Click on the link corresponding to your statistical package to see instructions for completing the activity, and then answer the questions below.

R | StatCrunch | Minitab | Excel 2007 | TI Calculator

### Question:

Obtain the 95% confidence interval for μ_{1} – μ_{2} and interpret it in context.