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

question 136

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 99% confidence interval estimate for the mean difference in weight before and after the diet?

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Definitions:

Carotenoid Pigments

Organic pigments found in plants and certain algae and bacteria, responsible for the red, yellow, and orange colors in many fruits and vegetables, and important for photosynthesis and human health.

Signal Of Quality Hypothesis

A theory suggesting that certain traits or behaviors in animals serve as indicators of an individual's genetic quality or overall fitness to potential mates.

Hereditary

Traits or characteristics passed from parents to offspring through genes.

Parent-Offspring Conflict

A situation in evolutionary biology where the interests of a parent and its offspring differ, leading to conflicts over resources.