If the manufacturer of Rogaine wants know how consumers feel about the hair growth product, and also wants to reduce the potential for interviewer bias and guarantee the subject's anonymity, the company probably should use:

If the manufacturer of Rogaine wants know how consumers feel about the hair growth product, and also wants to reduce the potential for interviewer bias and guarantee the subject's anonymity, the company probably should use:



1. The experimental method

2. Personal interviews

3. Observation research

4. A mail survey

5. Shopping mall intercepts



Answer: 4. A mail survey


Learn More :