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
Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio
Effect of substrate concentration on the initial velocity of an enzyme-catalyzed reaction
The Period-Luminosity Relation
Effect of Perceived Price of a Drug on Placebo Analgesia
Effect of the activation energy barrier.
First-Pass Effect: Oral Drug Is Metabolized to an Inactive Form Before It Has an Opportunity to ...