# Question: Each pair of graphs in Fig 10 8 shows the distributions

Each pair of graphs in Fig. 10.8 shows the distributions of a variable on two populations. Suppose that, in each case, you want to perform a small-sample hypothesis test based on independent simple random samples to compare the means of the two populations. In each case, decide which, if any, of the following tests is preferable: the pooled t-test, the nonpooled t-test, or the Mann-Whitney test. Explain your answers.

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