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:

Breast Lumps

Masses or swellings in the breast, which can be benign or indicative of conditions such as breast cancer.

Gravida

Total number of pregnancies a woman has had regardless of duration, including a present pregnancy.

Cervical

(1) Pertaining to the neck portion of the spinal column; (2) also to the entrance into the uterus.

Intraepithelial Lesion

A term describing early changes in the cells of the skin and some mucous membranes that may develop into cancer, usually found in the context of cervical cancer screening.