Consider the following hypothesis test. H0: ?d ≤ 0 Ha: ?d > 0 (a) The following data are from matched samples taken from two populations. Compute the difference value for each element. (Use Population 1 − Population 2.) Element Population Difference 1 2 1 21 19   2 28 28   3 18 16   4 20 19   5 26 26   (b) Compute d.   (c) Compute the standard deviation sd.   (d) Conduct a hypothesis test using ? = 0.05. Calculate the test statistic. (Round your answer to three decimal places.)   Calculate the p-value. (Round your answer to four decimal places.) p-value =

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