Carver Memorial Hospital's Surgeons Have a New Procedure That They

question 50

Multiple Choice

Carver Memorial Hospital's surgeons have a new procedure that they think will decrease the time to perform an appendectomy.A sample of 8 appendectomies using the old method had a mean of 38 minutes with a variance of 36 minutes,while a sample of 10 appendectomies using the experimental method had a mean of 29 minutes with a variance of 16 minutes.For a right-tail test of means (assume equal variances) ,the test statistic is:

• A) 3.814
• B) 2.365
• C) 3.000
• D) 1.895

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Definitions:

Cortex

The outermost part of the brain containing the greatest numbers of neurons and accounting for thought and consciousness.

Clinical Death

Defines death as the moment the heart stops beating.

Anoxia

A condition characterized by an absence of oxygen supply to an organ or a tissue, often leading to damage or dysfunction.

Decreased Percentage

A reduction in the ratio or fraction of a part in comparison to the whole, often expressed in terms of 'per hundred' (percent).