Question:

To compare the average amount of time that Canadians and Americans spend commuting, a researcher collects a sample of 50 Canadians and 60 Americans. The Canadians in the study spend an average of 4.6 hours a week commuting, with standard deviation 2.9 hours. The mean and standard deviation for the sample of Americans is 5.2 hours and 1.3 hours, respectively. Is there evidence at the alpha=0.05 level that Americans and Canadians spend different amounts of time commuting