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Author Question: The management of Regional Hospital has made substantial improvements in their hospital and would ... (Read 30 times)

ksmithunr

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on: Mar 25, 2023

The management of Regional Hospital has made substantial improvements in their hospital and would like to test and determine whether there has been a significant decrease in the average length of stay of their patients in their hospital.  The following data has been accumulated from before and after the improvements.  At 95% confidence, test to determine if there has been a significant reduction in the average length of stay.

 

After

Before

Sample size

45

58

Mean (in days)

4.6

4.9

Standard Deviation (σ)

0.5

0.6


a.Formulate the hypotheses.
b.Compute the test statistic.
c.Using the p-value approach, test to see if the average length of stay in RFH is significantly less than the average length of stay in GH. Let α = 0.05.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by ksmithunr on Mar 25, 2023

KobyRhoads

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Reply #1 on: Mar 25, 2023
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ksmithunr

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Reply 2 on: Mar 25, 2023
Great answer, keep it coming :)

Joy Chen

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Reply 3 on: Yesterday
Gracias!

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