In Selecting the Sample Size to Estimate the Population Proportion $$\hat { p }$$

Multiple Choice

In selecting the sample size to estimate the population proportion p, if we have no knowledge of even the approximate values of the sample proportion $$\hat { p }$$ , we:

A) take another sample and estimate p.
B) take two more samples and find the average of their $$\hat { p }$$ values.
C) let $$\hat { p }$$ = 0.50.
D) let $$\hat { p }$$ = 0.95.