TABLE 10-6 To Investigate the Efficacy of a Diet, a Random Sample

question 85

Short Answer

TABLE 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 Table 10-6, what is the 95% confidence interval estimate for the mean difference in weight before and after the diet?

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Definitions:

Negative Consequences

Unfavorable outcomes or penalties that result from an action or decision.

Cognitive

Relating to the mental processes involved in acquiring knowledge and comprehension, including thinking, knowing, remembering, judging, and problem-solving.

Automatic Negative Thoughts

Involuntary and often irrational thoughts that are pessimistic or negative in nature, which can contribute to feelings of anxiety or depression.

Therapeutic

Related to the treatment and healing of disease or disorder, aiming to relieve symptoms and improve well-being.