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A researcher wants to see if there is a difference in triglyceride levels between two populations. The first sample has 44 individuals with an average

A researcher wants to see if there is a difference in triglyceride levels between two populations. The first sample has 44 individuals with an average of 223 and a population standard deviation of 6. The second group has 56 individuals and has an average of 239 and a population standard deviation of 6. At alpha = 0.01, is there a difference in triglyceride levels between the two populations?

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