Final answer:
A Massachusetts driver with a Junior Operator permit must re-take the state's learner's permit exam after accumulating three speeding convictions.
Step-by-step explanation:
A Massachusetts driver who holds a Junior Operator permit must re-take the state's learner's permit exam after accumulating three or more speeding convictions.
According to the information provided, the participants in an experiment collected a total of thirty-three traffic citations in seventeen days, which suggests that accumulating three speeding convictions would require less than seventeen days.
Therefore, based on the provided information, a MA driver with a Junior Operator permit would need to re-take the state's learner's permit exam after accumulating three speeding convictions.