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

question 50

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, the computed t statistic is ________.

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Definitions:

Monopolistically Competitive

A market structure where many firms sell products that are similar but not identical, allowing for significant differentiation and market power.

Long-Run Equilibrium

A state in which all factors of production and markets adjust fully to any changes, resulting in a stable economic environment without excess supply or demand.

Long-Run Equilibrium

A state in which all inputs and outputs in a market are fully adjusted and there is no tendency for change, often associated with perfect competition markets.