FILEThe follow ing table contains inform ation on a matchedpairs sample.The data are also available on the

Question:

FILEThe follow ing table contains inform ation on a matchedpairs sample.The data are also available on the text website, labeled Exercise 20.10.

Number Sample 1 Sample 2 1 18 21 2 12 11 3 21 23 4 22 20 5 16 20 6 14 17 7 17 17 8 18 22

a. Specify the competing hypotheses that determine whether the median difference between Population 1 and Population 2 is less than zero.

b. Calculate the value of the test statistic T.

c. With α = 0.05, what is the decision rule?

d. Is the median difference between Population 1 and Population 2 less than zero? Explain.

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Ali Khawaja

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