Question: In a Research Strategy Planning Meeting your and the Research Project Manager are discussing the sample you are to survey, and the question of Sample Size comes up.You know your VP will accept no more than a 5% Margin of Error.You feel that through proper qualifying questions the pool of targeted research participants will be at the 85+% level but to "play it safe" you feel it is prudent to use an 80% level. Using for Sample Size formula, calculate the sample size for this research study.

Z-VALUE CONFIDENCE LEVELS (FOR PROPORTIONS) Confidence Level Z-Value 68% 1.00 80% 1.28 90% 1.65 95% 1.96 98% 2.33 99% 2.58