Comparing Means

In class students learned how to calculate a confidence interval and conduct a hypothesis test for the difference of means.  For a hypothesis test, you must complete the following:

1. Find sample means/std. deviations-use comparative box plots to compare distributions.

2. Generate null and alternative  hypothesis from above data and data displays.

3. Check Assumptions and Conditions:
                                           a. Independent Assumption (Random/Less than 10%)
                                           b. Independent Groups Assumption (no overlap/no interaction)
                                           c. Nearly Normal Assumption - (draw histograms/n > 30?)

4. Identify and Complete test - t-test/p-value

5. State conclusion in context and provide confidence interval.


The notes are attached and the homework is listed below


Notes - Comparing Means


HW - pgs. 581-583 (12, 13, 21, 27, 31)
         Investigative Task #10 - SAT Scores
         *Quiz Thursday March 19th