Sajed is a MBA student studies audit quality he needs to determine the sample size of his study. He will use questionnaire as a data collection method, the respondent should have at least a postgraduate diploma. Based on a small survey he finds that the number of external auditor who has a postgraduate diploma is 16 out of 40 and the required margin of error is 5% and confidence level is 95%.

Instructions:

a. Calculate the sample size assuming that the size of the population is 5000 members.

b. How will sample size change with the changes in confidence level and margin of error.

c. Compare and contrast stratified sampling and expert sampling.