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

question 57

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, there are ________ degrees of freedom for this test.

---

Definitions:

Monetary Policies

The procedures and actions of a central bank, currency board, or other regulatory committees that determine the size and rate of growth of the money supply, which in turn affects interest rates.

Fiscal Policies

Government policies regarding taxation and spending to influence a country's economy.

Federal Reserve System

The central banking system of the United States, responsible for monetary policy, bank regulation, and ensuring financial stability.

Federal Budget

An annual financial statement presenting the government's proposed revenues and spending for a fiscal year, outlining the allocation of funds across various government departments and programs.