In estimating the sample size necessary to estimate p, if there is no good approximation for the value of p available, the value of ____ should be used as an estimate of p in the formula.
A)0.10
B)0.50
C)0.40
D)1.96
E)2.00

Question

Quizplus · Accepted Answer

When there is no good approximation for the value of p available, 0.50 is used as an estimate of p in the formula for estimating sample size. This is because 0.50 maximizes the product p(1-p), which in turn maximizes the sample size, ensuring a conservative estimate when the true proportion is unknown.

In Estimating the Sample Size Necessary to Estimate P, If