Two Simple Examples Use the sign test to compare two populations for significant differences for the paired data . State the null and alternative hypotheses to be tested. Determine an appropriate rejection region with a #.10. Calculate the observed value of the test statistic and present your conclusion.

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4. Pair Population 1 2 3 4 5 6 7 1 8.9 8.1 9.3 7.7 10.4 8.3 7.4 2 8.8 7.4 9.0 7.8 9.9 8.1 6.9