Author Question: One way to briefly state the alternative hypothesis for the control group posttest only design is to ... (Read 49 times)

captainjonesify · **on:** Jun 19, 2018

One way to briefly state the alternative hypothesis for the control group posttest only design is to state that _____.

a. the group means are equal
b. the groups are equivalent because they include the same participants
c. the null hypothesis could not be rejected
d. the group means are not equal

Question 2

One way to state the null hypothesis is to say that in the control groups posttest only design, _____.

a. randomization was used
b. the two groups are equivalent at the beginning of data collection
c. the two groups are not equal at the end of the experiment
d. the groups means are equal

ankilker · **Reply #1 on:** Jun 19, 2018

Answer to Question 1

D
The alternative hypothesis states that there is a difference (unequal means) between the groups that is caused by the manipulation of the independent variable.

Answer to Question 2

D
To say that the group means are equal is to say that they are NOT different. That says the same thing as the null hypothesis.