A Researcher Is Interested in the Effect of Exercise on Stamina

question 135

Multiple Choice

A researcher is interested in the effect of exercise on stamina in elderly patients. The patients are randomly assigned to be in a high-exercise or low-exercise training program for eight weeks. At the end of the program, their stamina is measured by seeing how long they can walk comfortably on a treadmill. In this study, the dependent variable is

• A) the number of minutes on the treadmill.
• B) the exercise program (high versus low).
• C) the number of elderly patients.
• D) the eight-week duration of the exercise program.

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Definitions:

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A machine used in scrapyards to crush cars into small, compact pieces using hydraulic power.

Dispose of Cars

The process of discarding or recycling vehicles that are no longer functional or needed.

Total Costs

The aggregate of all expenses incurred by a business in the production of goods or services, including fixed and variable costs.

Average Variable Costs

The total variable costs of production divided by the quantity of output produced, reflecting the cost of producing each additional unit.