You work for an online retailer. Your colleague asserts that the average review scores from Canadian buyers are the same as those of American buyers. You think that they are wrong! You take samples of reviews from both Canadian and American customers; data for the two samples are given in the Excel file. Test the hypothesis that the means for Canadians are different from those of Americans, at the 95% confidence level. Show all parts of the hypothesis test, including your hypotheses, identification/calculation of the necessary values, your test-statistic calculation, your p-value calculation, and your conclusion.

DATA

Canadian	American
5	4
4	5
1	5
2	5
3	3
2	3
2	5
2	3
2	5
3	4
4	3
1	2
5	1
3	3
5	4
1	4
4	4
2	5
4	1
3	4
3	4
4	5
3	1
1	3
4	4
3	2
3	3
1	4
3	5
1	1
5	3
5	1
5	1
3	5
5	1
2	4
5	1
2	3
1	4
4	5
3	4
5	2
5	1
1	1
1	1
5	3
4	5
1	2
5	4
2	3
2	4
1	4
5	3
2	3
1	3
3	4
5	1
1	4
2	1
4	2
4	4
4	1
2	5
5	4
3	5
3	4
3	3
5	5
5	4
2	3
3	5
1	2
1	3
2	5
2	5
	2
	5
	5
	2
	4