"The organisation in Simon's study has a workforce of 2000. His calculations show that to be 95% sure that his findings are within 5% of the population average he needs a sample size of 322. He prepares and sends 322 questionnaires." What has Simon done wrong?
A) He has accepted too large a margin of error
B) His confidence interval should be smaller
C) He has not taken into account non-response
D) His sample frame is flawed

Question

Quizplus · Accepted Answer

Simon has not accounted for the possibility that not all 322 questionnaires will be returned, which could affect the validity of his sample size and results.

"The Organisation in Simon's Study Has a Workforce of 2000