In the document "Peak Discharge from Unlogged and Logged Watersheds," J. Jones and G. Grant compiled (paired) data on peak discharge from storms in two watersheds, one unlogged and one logged (100% clear-cut). If there is an effect due to clear-cutting, one would expect that the runoff would be greater in the logged area than in the unlogged area. The runoffs, in cubic meters per second per square kilometer (m3/s/km2), are provided on the WeissStats site. Use the technology of your choice to do the following.

a. Formulate the null and alternative hypotheses to reflect the expectation expressed above.

b. Apply the paired Wilcoxon signed-rank test to perform the required hypothesis test at the 1% significance level.

c. Compare your result in part (b) to the one obtained in Exercise 10.172 on page 498, where the paired t-test was used.

d. Which test do you think is preferable: the paired t-test or the paired Wilcoxon signed-rank test? Explain your answer.