A sample of heights of 6100 Englishmen has a mean of 85.67 inches and a standard deviation of 2.65
inches, while a sample of heights of 1200 Australians has a mean of 55.68 inches and a standard deviation
of 2.25 inches. Do the data indicate that Australians are on the average taller than Englishmen? Use α =
0.01.
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