Concept explainers
In Exercises C. 77-C.83. we have repeated the information from Exercises C.47–C.53. For each exercise, use Procedure C.2 on page C-44 or Procedure C.3 on page C-51 to perform the appropriate multiple comparisons using a family confidence level of 0.95,
C.81 Hospital Stays. The U.S. National Center for Health Statistics collects data on length of stay in noninstitutional, short-stay hospitals by sex and age. Results are published in Vital and Health Statistics.
Independent random samples of Americans were taken to compare the lengths of stay (in days) for males and females in four age groups (15–24 years, 25–34 years, 35–14 years, and 45–64 years). The data are provided in the table in Exercise C.51 on page C-36. Output C. 15 on page C-38 shows computer output obtained for a two-way ANOVA on these data and also supplies a table of cell and marginal means.
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Introductory Statistics (10th Edition)
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