5. A car advertisement asserts that with the new collapsible bumper system, the average body repair cost for the damages sustained in a collision impact of 10 miles per hour does not exceed $300. To test the validity of this claim, Consumer Reports collects 5 cars as their experimental samples. 5 cars are crashed into a stone barrier at an impact force of 10 miles per hour and their subsequent body repoair costs are recorded. The mean and the standard deviation are found to be $358 and $45, respectively. Do these data strongly contradict the advertisement