Do workers on different shifts get different amounts of sleep per week? Some people believe that shift workers who regularly work the graveyard shift (12:00 A.M.to 8:00 A.M.) or swing shift (4:00 P.M.to 12:00 A.M.) are unable to get the same amount of sleep as day workers because of family schedules, noise, amount of daylight, and other factors. To test this theory, a researcher samples workers from day, swing, and graveyard shifts and asks each worker to keep a sleep journal for one week. The following data represent the number of hours of sleep per week per worker for the different shifts. Use the Kruskal-Wallis test to determine whether there is a significant difference in the number of hours of sleep per week for workers on these shifts. Use α =.05.
Answer to relevant QuestionsUse the following data to test to determine whether there are any differences between treatment levels. Let α =.05.Compute a Spearman’s rank correlation for the following variables to determine the degree of association between the two variables.x .... y23 .... 20141 .... 25937 .... 23429 .... 24025 .... 23117 .... 20933 .... 22941 ...Use the runs test to determine whether the sample is random. Let alpha be.05.Three machines produce the same part. Ten different machine operators work these machines. A quality team wants to determine whether the machines are producing parts that are significantly different from each other in ...Should male managers wear a tie during the workday to command respect and demonstrate professionalism? Suppose a measurement scale has been developed that generates a management professionalism score. A random sample of ...
Post your question