We have been given the following:
Population is infinite;
e = 0.04 (since the estimate should be within 4% of the true value);
z = 1.96 (as per table of area under normal curve for the given confidence level of 95%)
As we want the most conservative sample size we shall take the value of p = 0.5 and q =0 .5.
We can determine the sample size :
Thus, the most conservative sample size needed for the problem is 600.
Comments
Leave a comment