A random sample of size n = 41 results in a sample mean of 125.3 and a sample standard deviation of 8.5. An independent sample of size n = 50 results in a sample mean of 130.8 and sample standard deviation of 7.3. Does this constitute sufﬁcient evidence to conclude that the population means differ at the α = 0.01 level of signiﬁcance?
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