In trying to estimate the variability in the population in order to determine pq, which of the following represents viable alternatives?
A) Use a random number generator to provide two random values for p and q.
B) Use the most conservative approach, p = 10, q = 90.
C) Use 90/10 or find a former study and calculate the variance or conduct a pilot study.
D) Use 1/5 or find a former study and calculate the variance or conduct a pilot study.
E) Use 50/50 or find a former study and calculate the variance or conduct a pilot study.
Answer: E) Use 50/50 or find a former study and calculate the variance or conduct a pilot study.