Q. You need data on the financial behaviour (banking, loans, etc.) of mid-Americans to solve a particular problem your organization is experiencing. You design a questionnaire which you protest at a local bank officers' club meeting. You adjust the questionnaire also send it to a stratified sample of mid-Americans in a large mid western city. Your strata are defined geographically also consist of three areas. These are inner city, close out skirts, also suburbs. Illustrate what possible things could go wrong?