A Population Proportion Is to Be Estimated and a 95

Multiple Choice

A population proportion is to be estimated and a 95% degree of confidence is desired. In general, if one wishes to decrease the margin of error by a factor of 5 (for example from E = 0.05 to 0.01) , by what numerical factor will the necessary sample size increase?

A) 25
B) 24
C) 5
D) 20