Twenty volunteers were assigned at random to one of two groups (10 people in each group). One group would take Vitamin C for two weeks, while the second group would take a placebo. At the end of the study, the proportion of colds in the two groups will be compared. What is the explanatory variable in the study?
a. Getting a cold (or not)
b. Taking Vitamin C (or a Placebo)
c. Getting 8 hours of sleep a night (or not)
d. Exposure to other people with colds (or not)
Question 2
Twenty volunteers were assigned at random to one of two groups (10 people in each group). One group would take Vitamin C for two weeks, while the second group would take a placebo. At the end of the study, the proportion of colds in the two groups will be compared. What is the response variable in the study?
a. Getting a cold (or not)
b. Taking Vitamin C (or a Placebo)
c. Getting 8 hours of sleep a night (or not)
d. Exposure to other people with colds (or not)
Relationships and dates divergence of living primate group based on molecular and DNA comparisons.
Major Causes of Death in U.S by Age Group
Gas molecules have no bonds to other molecules and move in random motion.
Group that may block N-terminus and C-terminus
Group Project Meme
Group of Bees