Hi:enough to support the claim that the two populations indeed have some differences.
Comparing the means of two populations is a common task in statistical analysis. Independent samples and matched pair design require different approaches for conducting analysis.
Aside from the above formal methods of analysis, a popular approach employed by a naive investigator is to calculate the means of the samples of the two populations and then calculate the difference of the two means to see if the value is "large"
1) What are the negative consequences of using the naive approach, instead of using the formal approach?
2) What are the negative consequences of using a formal but wrong approach, for example, exchange the for independent samples and that for matched pair design?
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