Question: (2 pt) Questioning a sample of young people in New Zealand revealed a positive association between use of marijuana (cannabis) and traffic accidents caused by members of the sample. Both Cannabis use and accidents were measured by interviewing the young people themselves. The study report says "It is unlik4 that self reports of cannabis use and accident rates will be perfectly accurate".

a. Is the response bias likely to make the reported association strange or weaker than the true association?

b. Why?