Which statement best explains the confounding variable in this study?
A study of traffic violations on a busy highway finds that
the number of tickets for speeding written by officers
tends to decrease on rainy days. A police sergeant
explains that driver behavior could be a confounding
variable.
O On sunny days, more tickets for speeding are
written than on rainy days.
O Officers are less likely to want to leave their police
cars to write tickets on rainy days.
O Drivers may drive more carefully on rainy days, so
the number of speeding tickets decreases.
O Drivers are more likely to speed on rainy days to get
to their destination faster.
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