With a difference of percents test, what does it mean if the null hypothesis is not supported?
a. A difference does exist between the means of the two groups (populations).
b. No difference exists between the percents of the two groups (populations).
c. No difference exists between the means of all paired groups (populations).
d. A difference does exist between the percents of the two groups (populations).
e. A difference exists between the means of at least one pair of groups (populations).
Answer: a. A difference does exist between the means of the two groups (populations).