The management of Regional Hospital has made substantial improvements in their hospitaland would like to test and determine whether there has been a significant decrease in theaverage length of stay of their patients in their hospital. The following data has beenaccumulated before and after the improvements. At the 5% level, test to determine if therehas been a significant reduction in the average length of stay.Sample sizeMean (in days)Standard Deviation (0)a.Formulate the hypotheses.b. Compute the test statistic.C.d.After754.70.38Before484.90.72Using the p-value approach, test to see if there has been a significant reduction in theaverage length of stay. Let a = .10.What does the test result mean in the context of this problem?

AfterBeforeSample size7548Mean4.74.9Population standard deviation0.380.72

Answered: The management of Regional Hospital has…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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