Question
Select the correct answer from each drop-down menu. In an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. He studies two set of people-those who exercise every day for an hour and those who don't exercise at all, In this case the statement that people who exercise for an hour may have lower cholesterol levels is square To test this statement the scientist would measure cholesterol levels in exercisers and non- exercisers. The cholesterol levels would be square
Answer
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Xylia
Expert · Tutor for 3 years
Answer
a hypothesis; the dependent variable.
Explanation
This question presents you with an experimental situation. A scientist plans to study the effect of daily exercise (an hour daily) on the cholesterol levels in individuals. He has two sets of people in the study, those who do engage in daily exercise and those who do not. The statement that those who exercise may have lower cholesterol levels is essentially a proposed explanation based on limited evidence that the scientist is aiming to test, therefore serving as a hypothesis for his experiment.To test this proposed hypothesis, the scientist needs to compare the measured cholesterol levels of those who exercise and those who do not. These measurements are essential for evaluating the truth of the hypothesis. In an experiment, the aspect of the study that gets measured is known as the dependent variable. With that said, the measurement of cholesterol levels in this experiment serves as the dependent variable since it is dependent on the amount of exercise the individuals got.