Use the following to answer 10-12 The Jolly Blue Giant Health Insurance Company
ID: 2917067 • Letter: U
Question
Use the following to answer 10-12
The Jolly Blue Giant Health Insurance Company guidelinesays that average hospitalization for a triple hernia operationshould not exceed 3 days. A diligent auditor studied recordsof 16 randomly chosen triple hernia operations at HackMoreHospital, and found a mean hospital stay of 4 days with a standarddeviation of 2 days. “Aha!” she cried, “Ihave uncovered a violation of the guidelines.” Use aright-tail test at a =.025.
10. The critical value is
A) 1.753
B) 2.131
C) 1.645
D) 1.960
11. The value of the test statisticis
A) 2.080
B) 0.481
C) 1.866
D) 2.000
12. The decision is
A) borderline.
B) clear-cut.
C) implicit
D) conditional
Explanation / Answer
b) The critical value is t/2,15=2.131. d) The test statistic is t=2.00 c) ImplicitRelated Questions
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