Question: The average length of stay (LOS) from U.S. short-stay hospitals for a sample of 25 male pneumonia patients was 5.5 days with a standard deviation of 1.2 days. For a sample of 25 females, the average LOS was 5.9 days with a standard deviation of 2.2 days. (a) Assuming equal variances, is there a significant difference at α = .10? (b) Calculate the p-value using Excel. (See Department of Health and Human Services, Advance Data from Vital and Health Statistics, no. 332 [April 9, 2003], p. 13.)