Brian Was of Average Weight Throughout His Childhood and in College

question 105

Multiple Choice

Brian was of average weight throughout his childhood and in college. However, he has gained more than 30 pounds over the past 18 months and has become obese. Which of the following is most likely to be the cause of his obesity?

• A) the decline in food prices in his region
• B) the absence of physical activity in his daily routine
• C) the lower availability of energy-saving devices
• D) the decline in his mental health problems

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Definitions:

Standard Deviation

An indicator of the degree of spread or variability among a collection of figures.

One-sample T Statistic

A statistic used to compare the mean of a single sample to a known or hypothesized population mean.

P-value

The chance of getting test findings that are at least as unusual as the ones actually seen, given that the null hypothesis holds.

Null Hypothesis

A default hypothesis that there is no effect or difference, and any observed change in the data is due to random chance.