Consider the following hypothesis test. (=) The following data are from matched samples taken from two populations. Compute the difference value for each element. (Use Population 1 - Population 2.) Population Element 1 2 Difference 1 21 19 2 2 28 25 3 3 18 15 3 4 20 19 1 26 25 1 (b) Compute d. (c) Compute the standard deviation s (d) Conduct a hypothesis test using of = 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 =