You have decided to resolve scientifically a long-running controversy among commuters, as to which railroad is late more often. People from Connecticut and Westchester County claim that Metro-North is late more frequently, while commuters from Long Island claim that no one is late more often than the Long Island Railroad (LIRR). The Excel file for this check-up contains data you have collected from dozens of trips on each of the two commuter train lines. Perform a hypothesis test to see whether either group of commuters can claim that its train service is late more frequently than the other. Use a 95% confidence interval. Use Excel to make your calculations. Step
1: Formulate the null and alternative hypotheses; specify whether you're running a one or two tail test