Kruskal-Wallis Test ( H-test) Name: ________________________ Rating: Course: ___________________ School: USE THE 7 STEPS IN TESTING THE HYPOTHESIS Make an analysis of the situation below using the appropriate statistical tool. 1. The following data represent the operating times in hours for three types of machines before a next operation is required: Use the 0.01 level of significance to test the hypothesis that the operating times for all three machines are equal. 2. Random samples of four brands of cigarettes were tested for a tar content. The following figures show the milligrams of tar found in the 16 cigarettes tested: Use the 0.05 level of significance to test whether there is a significant difference in tar content among the four brands of cigarettes