Which of the following are true with respect to the sample size of a study (check all that apply)? Which of the following are true with respect to the sample size of a study (check all that apply)? The sample size should be small enough to not unduly put participants at risk with an experimental therapy. The sample size should be as large as is affordable. The level alpha doesn't impact the sample size. The variability of the measure being used to answer the research question impacts the sample size. The sample size should be large enough to detect statistically (i.e. reject the null hypothesis), for a given power, a meaningful effect (i.e. answer the research question)