In a Wakefield Research survey, 1003 subjects were asked if they ever hesitated to give a handshake because of a fear of germs. Of these respondents, 41.0% answered “yes.”

a. What is the number of respondents who answered “yes”?

b. If 24 of the respondents said that they were not sure, what is the percentage of “not sure” responses?

c. Given that the possible responses are “yes,” “no,” and “not sure,” are the data considered quantitative or qualitative?  What is the level of measurement of those responses (nominal, ordinal, interval, or ratio)?

d. Given that the survey was sponsored by Purell, a manufacturer of hand sanitizer products, is there any reason to question the results?