This formula calculated a population size (Np) of 1,163. A p level of .05 was selected,
which assumed maximum variation in respondents selecting responses that are the same
as other respondents. A sampling error (B) of + 5% offered an acceptable balance of
sampling error and cost involved in administering the survey. Finally, a Z score = 1.96
84
was chosen which translated to a confidence level of 95%. When these values were input
into the formula, completed sample size of 289 was obtained.