Identify the independent variable and levels

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Question: For each experiment that follows, identify the independent variable and its levels. Identify the dependent variable. State the null hypothesis in words.

a. A psychologist compared the annual income of people with high Satisfaction With Life Scale scores to the income of those with low SWLS scores.

b. A sociologist compared the numbers of years served in prison by those convicted of robbery and those convicted of embezzlement.

c. A physical therapist measured flexibility after 1 week of treatment and again after 6 weeks of treatment for 40 patients.

Reference no: EM131711519

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