A Researcher Wished to Assess the Importance of Exercise in Weight-Loss

question 22

Multiple Choice

A researcher wished to assess the importance of exercise in weight-loss programs.412 people,all considered to be at least 20 pounds overweight,were randomly assigned to one of two groups.Over a two-month period,the first group followed a particular diet but were instructed to perform no exercise other than walking.The second group followed the same diet but also performed aerobic exercise for one hour each day.At the end of the two months,the weight loss of each participant was recorded.The average weight loss for the second group was greater than the average weight loss for the first group.

• A)Prospective observational study
• B)Experiment
• C)Retrospective observational study

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Definitions:

Aggregate Demand

The totality of market demand for goods and services within an economy, set at an agreed-upon general price level over an established period.

Money Supply

The total fiscal assets present in an economy at a specific moment.

Long-Run Aggregate Supply

Represents the total output an economy can produce when both capital and labor resources are fully employed at their highest productivity levels.

Money Supply

The sum of all financial assets, such as cash, coins, and the amounts in checking and savings accounts, present in an economy at a given time.