Instruction 10-7 To Investigate the Efficacy of a Diet, a Random Sample

question 113

Short Answer

Instruction 10-7
To investigate the efficacy of a diet, a random sample of 16 male patients is drawn 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 kilograms with the standard deviation of differences computed as 6.0 kilograms.
-Referring to Instruction 10-7,what is the 99% confidence interval estimate for the mean difference in weight before and after the diet?

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Definitions:

Alimentary Canal

The whole passage along which food passes through the body from mouth to anus, including the esophagus, stomach, and intestines.

Erythrocytes

Red blood cells, which are responsible for transporting oxygen from the lungs to the body tissues and carbon dioxide from the tissues back to the lungs.

Rhinitis

Inflammation of the nasal mucous membrane, leading to symptoms such as a runny nose, sneezing, and nasal itching.

Muscle Layers

Groups of muscles arranged one on top of another within the body, contributing to its structure and movement.