For Exercises 49–52, identify the independent and dependent variables for each study. 49.A study was conducted...

For Exercises 49–52, identify the independent and dependent variables for each study.

49.A study was conducted to determine if crocodiles raised in captivity (i.e., in a zoo) grew faster than crocodiles living in the wild. Identify the explanatory variable and the outcome variable.

50.People who walk at least 3 miles a day are randomly selected, and their blood triglyceride levels are measured in order to determine if the number of miles that they walk has any influence on these levels.

51.In an article in the British Journal of Nutrition, two types of mice were randomly selected. One group received a thyme supplement for a specific time, while another group was used as a control group and received no supplements. The brains of the mice were then analyzed, and it was found that the brains of the group of mice that received the thyme supplements had antioxidant levels similar to those of younger mice. It was concluded that the thyme supplement increased the antioxidants in the brains of the mice.

52.A study was conducted to determine if workers who had a flexible work schedule had greater job satisfaction than those workers who worked a regular nine-to-five work schedule. Independent variable—type of work schedule.

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