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

question 57

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.The null hypothesis is that triglyceride levels have the same distribution at the beginning and at the end of the study.What is the appropriate alternative hypothesis?

• A)Triglyceride levels are systematically higher at the beginning of the study.
• B)Triglyceride levels are systematically higher at the end of the study.
• C)Triglyceride levels at the beginning of the study are systematically different from triglyceride levels at the end of the study.
• D)None of the above

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Definitions:

Brain Damage

Injury or destruction of brain tissue resulting from illness, trauma, or other conditions, potentially affecting physical and cognitive abilities.

Amnesia

A condition characterized by a partial or total loss of memory, often due to injury or disease affecting the brain.

Central Executive

A component of working memory model that oversees and regulates the flow of information, coordinating cognitive tasks such as attention, problem-solving, and planning.

Phonological Loop

A component of the working memory model that deals with auditory information, including the storage and manipulation of verbal and auditory data.