Refer to Problem 29.

a. Perform the required hypothesis test, using the Wilcoxon signedrank test.

b. In performing the hypothesis test in part (a), what assumption did you make about the distribution of last year’s values lost to purse snatching?

c. In Problem 29, we used the t-test to perform the hypothesis test.

The assumption in that problem is that last year’s values lost to purse snatching are normally distributed. If that assumption is true, why is it permissible to perform a Wilcoxon signed-rank test for the mean value lost?

* Purse Snatching.