First, set up two hypotheses: the null hypothesis (H0) says there's no difference in performance, and the alternative hypothesis (H1) says there is a difference. Collect data on both teams, like win-loss records and batting averages. Calculate the average and standard deviation for each team's data. Use a two-sample t-test to compare these averages. If the t-statistic you calculate is greater than a critical value from a t-distribution table, you reject the null hypothesis, suggesting a significant difference