Defining housing as "substandard" is somewhat arbitrary

Which of the following statements correctly describes disadvantages to between subjects designs?

a. It is not possible to minimize disadvantages for the design. b. It is possible to minimize disadvantages for the design. c. It is possible to minimize disadvantages for the design but such measures are costly. d. None of the above.

We actually test the null hypothesis rather than the hypothesis

Indicate whether the statement is true or false.