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As Part of a Large,ongoing Diet Study,some Subjects of the Study

question 5

Multiple Choice

As part of a large,ongoing diet study,some subjects of the study are taking part in an intensive exercise program for four weeks.Several variables are measured on these subjects,both at the beginning and at the end of the four-week period.Some of these variables are weight,cholesterol,and triglyceride level.One objective of this particular study is to assess the effect of diet and intense exercise on increasing triglyceride levels.The data for a simple random sample of nine of these subjects are given in the table below. The data are to be analyzed using the Wilcoxon signed rank test.Under the null hypothesis that triglyceride levels have the same distribution at the beginning and at the end of the study,what is the standard deviation of the test statistic W⁺?

Definitions:

Hippocampus

A region of the brain associated with the formation of new memories and spatial navigation.

Anterograde Amnesia

A loss of the ability to create new memories after the event that caused the amnesia, leading to a partial or complete inability to recall the recent past, while long-term memories from before the event remain intact.

Coma

A state of deep unconsciousness in which a person cannot be awakened, resulting from illness or injury.

Concussion

A form of brain damage resulting from a head impact, fall, or other incident that causes the brain to move forcefully within the skull.