112 A random sample of five pairs of observations was selected, one observation from a population with
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112 A random sample of five pairs of observations was selected, one observation from a population with mean m1, the other from a population with mean m2. The data are shown in the following table and saved in the LM9_112 file.
a. Test the null hypothesis H0: md = 0 against Ha: md 0, where md = m1 - m2. Use a = .05.
b. Form a 95% confidence interval for md.
c. When are the procedures you used in parts a and b valid?
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