Refer to Figure 4.16, which shows a randomization distribution for hypotheses H₀: μ₁= μ₂vs H_a: μ₁‰  μ₂. The statistic used for each sample is D = xÌ…₁ˆ’ xÌ…₂. Answer parts (a) and (b) using the two possible sample results given in each exercise.

Figure 4.16

(a) For each D-value, sketch a smooth curve to roughly approximate the distribution in Figure 4.16, mark the D-value on the horizontal axis, and shade in the proportion of area corresponding to the p-value.
(b) Which sample provides the strongest evidence against H₀? Why?

D = 0.7 or D = ˆ’1.3

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