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Guidelines for the Jolly Blue Giant Health Insurance Company Say

Question 67

Multiple Choice

Guidelines for the Jolly Blue Giant Health Insurance Company say that the average hospitalization for a triple hernia operation should not exceed 30 hours. A diligent auditor studied records of 16 randomly chosen triple hernia operations at Hackmore Hospital and found a mean hospital stay of 40 hours with a standard deviation of 20 hours. "Aha!" she cried, "the average stay exceeds the guideline." The value of the test statistic for her hypothesis is:


A) 2.080
B) 0.481
C) 1.866
D) 2.000

Correct Answer:

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