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

question 121

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, a one-tail test of the null hypothesis of no difference would ________ (be rejected/not be rejected) at the α = 0.05 level of significance.

Understand the concept of confirmation bias and its impact on health decisions.

Recognize the psychological and personality factors associated with health risks and disease susceptibility.

Understand how perceptions of social norms influence health-related behaviors.

Grasp the effects of media and social influences on health behaviors such as smoking.

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Definitions:

Cash Payback Methods

A technique used to estimate the profitability of an investment by calculating the time needed to recoup the initial investment from the cash flows generated by that investment.

Capital Investment Proposals

Suggestions for strategic investments in long-term assets, projects, or ventures aimed at enhancing a company's growth and profitability.

Fixed Asset

Long-term tangible property that a firm owns and uses in its operations to generate income, not expected to be consumed or converted into cash in the short term.

Useful Life

An estimate of the lifespan of an asset during which it is expected to remain productive or useful for the purposes it was acquired.