Data was collected on the number of sick days for 7 factory workers during one year. The owner of the factory then installed better lighting and also allowed workers to take a 15 minute break in both the morning and afternoon. The number of sick days for the same 7 workers was obtained for the following year. Using a Wilcoxon signed ranks test, test the claim that the number of sick days has been reduced at = 0.05 Worker Number Before After 1 6 8 2 15 12 3 18 16 4 14 9 5 27 23 6 17 14 7 9 15 A. Determine the critical value. B. Determine the test statistic.