Minitab Instructions: A Statistical Investigation using Software
- Choose Stat -> Basic Statistics -> 2 Proportions...
- Click 'Summarized data' and enter the number of successes (Events) and sample size (Trials) for each variable.
- Click 'Options' and enter a confidence level (this defines the corresponding value for the level of significance), and the 'Test difference' from the null hypothesis. Also, enter the appropriate alternative hypothesis symbol and check 'Use pooled estimate of p for test' to use the pooled proportion in the test statistic.
- Click OK twice.