Consider the hypothesis test H,: H1 = H2 against H;: 4, # H2. Suppose that sample sizes are n = 10 and n2 = 10, that , = 7.8 and 82 = 5.6 and that sỉ = 4 and s = 9. Assume that of = o and that data are drawn from normal distributions. Use a = 0.05. Test the hypothesis and find the P-value.

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