Suppose that we are testing H0 ????1 = ????2 versus H0 ????1 > ????2 where

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Suppose that we are testing H0 ∶ ????1 = ????2 versus H0 ∶

????1 > ????2 where the two sample sizes are n1 = n2 = 10. Both sample variances are unknown but assumed equal. Find bounds on the P-value for the following observed values of the test statistic.

(a) t0 = 2.31

(b) t0 = 3.60

(c) t0 = 1.95

(d) t0 = 2.19

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