Select the FALSE statement about completely random design.

• a.)This design is the easiest way of assigning individuals to a treatment group.
• b.)The test subjects are first broken into groups based on a certain variable of interest before being assigned to each treatment condition.
• c.)his design can lead to disproportionate results.
• d.)The test subjects are assigned to treatment levels of the primary factor at random.

Which of these statements best describes a matched-pair design?

• a.)A design in which an entire sample is divided into pairs, and then the pairs are matched together at random.
• b.)A design in which the total population is randomly divided into groups of equal size and a treatment is assigned to each group.
• c.)A design in which the total population is divided into homogeneous blocks and a treatment is assigned to every element of the block.
• d.)A design in which only two treatments are tested on pairs of similar subjects.