Question

Suppose you want to know how often people brush their teeth every day, so you take a survey. Explain why the survey results would indicate far more gleaming smiles than actually exist. (In fact, such a survey would indicate about twice as much brushing as actually happens.)

Answer 1

The survey results may indicate far more gleaming smiles that actually beacuse people might lie on the survey because they dont want people to know that they dont brust their teeth daily. ANYONE just wouldnt confess to a total stranger that they have poor teeth hygine