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:

Amphibia

A class of cold-blooded vertebrates that includes frogs, toads, salamanders, and newts, distinguished by their ability to live both in water and on land.

Vertebrate Classes

Categories within the subphylum Vertebrata, distinguishing animals based on key features like presence of a backbone, including mammals, birds, reptiles, amphibians, and fish.

Cartilaginous Skeleton

A type of skeleton found in certain animals where the principal structural component is cartilage, rather than bone.

Paired Fins

Appendages found on fish that are used for stabilization, steering, and propulsion through the water.