Updated quiz info
Updated quiz info


Former-commit-id: b607b4448bbcade231cd55fc31e3279f8eeff42a
Former-commit-id: 8cdffb1fce498620aaede5e2c1e842bf558fb0bd
Former-commit-id: f226d757f6b98a43905d7a945da8fe55ec2a6bdd
StanfordHCI/cs247,StanfordHCI/cs247,StanfordHCI/cs247