Suppose That You Want to Perform a Hypothesis Test Based

Suppose that you want to perform a hypothesis test based on independent simple random samples to compare the means of two populations. Normal probability plots for the two samples are linear and therefore suggest that the variable under consideration is normally distributed on each population. Is it then reasonable to proceed with a pooled t-test? If not, what additional information is required and what methods might be used to obtain this information?

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It is not yet reasonable to proceed with...

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