When choosing a sample size for a population proportion a practitioner is considering either setting p = 0.5, or, using a preliminary estimate of p-hat=0.7. Which is true? a. Using the preliminary estimate of p-hat -0.7 yields a larger sample size than when p0.5 is used. b. Using the value 0.3 (the complement of p-hat in this case) yields a larger sample than when p0.5 is used. c. The sample size is maximized (thus making it a more conservative approach) with the value of p vs. the value of p-hat. d. Both the preliminary estimate of phat -0.7 and p 0.5 yield the same sample size.
