Salaries of 30 randomly chosen individuals in the same occupation (only the first 3 and last 3 observations are shown). The data are from a salary equity study comparing two industries. Research question: Without assuming normality of the populations, is there a difference in the medians at α = .01?
Answer to relevant QuestionsDoes a class break stimulate the pulse? Here are heart rates for a sample of 30 students before and after a class break. Research question: At α = .05, do the medians differ? The waiting time (in minutes) for emergency room patients with non-life-threatening injuries was measured at four hospitals for all patients who arrived between 6:00 and 6:30 p.m. on a certain Wednesday. The results are ...A newspaper article listed nutritional facts for 56 frozen dinners. From that list, 16 frozen dinners were randomly selected by using the random number method. Research question: Choose any two variables. At α = .01, based ...An experimental bumper was designed to reduce damage in low-speed collisions. This bum- per was installed on an experimental group of vans in a large eet, but not on a control group. At the end of a trial period, there were ...Set up control limits for an x-bar chart, given μ = 400, σ = 2, and n = 4.
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