Effect of Spa Bellagio on the test statistic. Refer to given Exercise. Using the altered data, state appropriate null and alternative hypotheses and calculate the value of W, the test statistic.
Exercise
The effect of Spa Bellagio on the result. Refer to the previous exercise. Spa Bellagio in Las Vegas is one of the spas in Group B. Suppose that this spa was the second spa selected in the random sample for Group B. Replace the observation 780 in Group B by 4003, the number of rooms in Spa Bellagio. Use the modified data to make a list of the ranks for Groups A and B combined. What changes?