Select all that apply: Inclusion and exclusion criteria reflect the ethical considerations of the researchers regarding

	a.	the extent the results will generalize to the population.
	b.	who may and may not participate in the research study.
	c.	bias for selecting only favorable participants.

Fill in the blank: Inclusion criterion ____________________________________________.

	a.	bias the study by selecting only favorable participants
	b.	define the characteristics important to your study
	c.	are not important for stratified random sampling
	d.	are not revealed in your publishable manuscript

It is important to predetermine the number of subjects to recruit because:

	a.	Sampling will be easier if more people are participating
	b.	It carries more prestige to have a large number of subjects
	c.	The Institutional Review Board (IRB) is concerned with including enough people to be fair
	d.	We need enough subjects to power the statistics towards finding a significance if it exists