In a Test of a New Surgical Procedure,the Five Most

question 84

Multiple Choice

In a test of a new surgical procedure,the five most respected surgeons in FlatBroke Township were invited to Carver Hospital.Each surgeon was assigned two patients of the same age,gender,and overall health.One patient was operated upon in the old way,and the other in the new way.Both procedures are considered equally safe.The surgery times are shown below: Which test should we use to test for zero difference in mean times?

• A) Paired t-test
• B) Independent samples t-test
• C) Independent sampes z test
• D) Cannot be sure without knowing  .

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Definitions:

NPO

An abbreviation for "nil per os," a medical instruction meaning to withhold oral food and fluids from a patient.

Every Hour

A term indicating that an action should be performed or an event will occur once every hour.

Milliliter

A metric unit of volume equal to one thousandth of a liter, commonly used to measure liquid quantities.

Discontinue

Termination or cessation of an action or process.