SCENARIO 10-6 to Investigate the Efficacy of a Diet,a Random Sample of Sample

question 51

Short Answer

SCENARIO 10-6
To investigate the efficacy of a diet,a random sample of 16 male patients is selected from a population of adult males using the diet.The weight of each individual in the sample is taken at the start of the diet and at a medical follow-up 4 weeks later.Assuming that the population of differences in weight before versus after the diet follow a normal distribution,the t-test for related samples can be used to determine if there was a significant decrease in the mean weight during this period.Suppose the mean decrease in weights over all 16 subjects in the study is 3.0 pounds with the standard deviation of differences computed as 6.0 pounds.
-Referring to Scenario 10-6,the t test should be _____ -tail.

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Definitions:

Obsessive-Compulsive

Relating to a disorder characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions).

Narcissus

In mythology, a figure known for his beauty and extreme self-love, leading to the term narcissism which describes self-centeredness or egoism.

Greek Mythology

A body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.

Avoidant Personality Disorder

A mental health disorder characterized by a long-standing pattern of extreme social inhibition, feelings of inadequacy, and sensitivity to rejection.