If nothing is known about p, 0.5 can be substituted for p in the sample-size formula for a population proportion. But when this is done, the resulting sample size may be larger than needed.
A) Under what circumstances will using p = 0.5 in the sample-size formula yield a sample size larger than needed to construct a confidence interval for p with a specified bound and a specified confidence level?
Choose the correct choice below.
O Whenever p is different from 0.5
O Only when p equals 0.5
O Only when p equals 1
O Only when p equals 0