Can a conclusion that the exercise program caused more sleep? a. ...

[javeds]

Can a conclusion that the exercise program caused more sleep?
 a. A cause and effect relation might be concluded because the study had a control group.
  b. A cause and effect relation might be concluded because the study was a randomized experiment.
  c. A cause and effect relation cannot be concluded because the study was an observational study.
  d. A cause and effect relation cannot be concluded because diet was not controlled.

Question 2

What is the explanatory variable in the study?
 a. Amount of food eaten (calories) per day
  b. Following an exercise program four times a week for 16 weeks (or not)
  c. Amount of sleep per night
  d. Age

[chereeb]

Answer to Question 1

B

Answer to Question 2

B

[javeds]

Thanks

[chereeb]

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