Is it possible to create a quiz that will give the student full credit for simply submitting it? ...

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Is it possible to create a quiz that will give the student full credit for simply submitting it? What we would like to do, ideally, is to have the quiz associated with a scheme that gives 100% for anything over 1 point, but that doesn't seem to work.
 

Ideally each quiz item would still be worth points, so the instructor could see where the problems are and how students would do (and get a report), but students would get full credit for simply attempting it. We have set it so all quiz items are bonus questions, but we would love to get the scheme or selectbox working if we could.