In U S hospitals the average length of stay LOS for
In U.S. hospitals, the average length of stay (LOS) for a diagnosis of pneumonia is 137 hours with a standard deviation of 25 hours. The LOS (in hours) for a sample of 12 pneumonia patients at Santa Theresa Memorial Hospital is shown below. In a two-tailed test at α = .05, is this sample variance consistent with the national norms? Show all steps, including the hypotheses and critical values from Appendix E.
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