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

question 80

Short Answer

TABLE 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 pounds with the standard deviation of differences computed as 6.0 pounds.
-Referring to Table 10-7, what is the 90% confidence interval estimate for the mean difference in weight before and after the diet?

---

Definitions:

Neoclassicism

An artistic and decorative style derived from classical antiquity's art and culture, particularly popular in the 18th and early 19th centuries.

Napoleon

A French military and political leader who rose to prominence during the French Revolution and its associated wars, eventually becoming Emperor of the French.

Patriotism

A sense of pride and loyalty towards one's country, often expressed through actions or symbols demonstrating love and commitment to the nation.

Madame de Pompadour

Jeanne-Antoinette Poisson, Marquise de Pompadour, known as Madame de Pompadour, was a member of the French court and the official chief mistress of Louis XV from 1745 to 1751.