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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 before and after the improvements. At the 5% level, test to determine if there has been a significant reduction in the average length of stay. Sample size Mean (in days) Standard Deviation (o) a. Formulate the hypotheses. b. Compute the test statistic. C. d. After 68 4.4 0.55 Before 40 4.9 0.61 Using the p-value approach, test to see if there has been a significant reduction in the average length of stay. Let a = .10. What does the test result mean in the context of this problem?

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 before and after the improvements. At the 5% level, test to determine if there has been a significant reduction in the average length of stay. Sample size Mean (in days) Standard Deviation (o) a. Formulate the hypotheses. b. Compute the test statistic. C. d. After 68 4.4 0.55 Before 40 4.9 0.61 Using the p-value approach, test to see if there has been a significant reduction in the average length of stay. Let a = .10. What does the test result mean in the context of this problem?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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 before and after the improvements. At the 5% level, test to determine if there has been a significant reduction in the average length of stay. Sample size Mean (in days) Standard Deviation (o) C. After d. 68 4.4 0.55 Before 40 4.9 a. Formulate the hypotheses. b. Compute the test statistic. Using the p-value approach, test to see if there has been a significant reduction in the average length of stay. Let a = .10. What does the test result mean in the context of this problem? 0.61
Transcribed Image Text: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 before and after the improvements. At the 5% level, test to determine if there has been a significant reduction in the average length of stay. Sample size Mean (in days) Standard Deviation (o) C. After d. 68 4.4 0.55 Before 40 4.9 a. Formulate the hypotheses. b. Compute the test statistic. Using the p-value approach, test to see if there has been a significant reduction in the average length of stay. Let a = .10. What does the test result mean in the context of this problem? 0.61
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