Z 1645 p 05 e 004. 196 for 95 confidence level P population proportion expressed as decimal assumed to be 05 50 M Margin of Error at 5 005. Dummies helps everyone be more knowledgeable and confident in applying what they know.
Z 1645 p 05 e 004.
N population size e Margin of error percentage in decimal form z z-score. Learn more about population standard deviation or explore other statistical calculators as well as hundreds of other calculators addressing math finance health fitness and more. If the population is N then the corrected sample size should be 186N N185. Sample Size N 1 Ne 2 240 1 240 004 2 240 1 240 00016 240 1 0384 240 1384 17341 final answer 240 1 240 004 2 240 1 240 00016 240 1 0384 240 1384 17341 final answer.