Example 3: Knowledge of the amount of time a patient occupies a hospital bedcalled length of stay (LOS)is important for allocating resources. At one hospital, the mean LOS was determined to be 5 days. A hOSpital administrator believes the mean LOS may now be less than 5 days due to a newly adopted managed health care system. To check this, the LOSS (in days) for 100 randomly selected hospital patients were recorded; these data are listed in Table below. Suppose we want to test the hypothesis that the true mean length of stay at the hospital is less than 5 days; that is, Ho: Ha: Please use the data in the table to conduct the test at a = .05. The data were entered into a computer and Minitab was used to conduct the analysis. LIL-.17 m W ospitalPatiants 2 3 R 6 4 4 4 2 S K II] 4 4 4 2 l 3 2 ll] 1 3 2 3 4 3 5 2 4 l 2 '3' | F l? 9 9 9 4 4 l 1 | 3 l 6 3 3 2 W l 3 "l [-1 2 3 9 F: 6 'l 5 1 4 a ll 22 l 0 6 2 2 '3 4 3 6 I 5 | 6 1T 1 1' 4 5 4 4 3 2 1 J 5 2 3 3 2 ll] 2 4 3 0m Sample 2'; L05 ill-Eli\"! .'jl'."_4:1 1.'."_4".'.'. - \"t l