Question: Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify this difference, insurance companies claim that teenage drivers are much more likely to be involved in costly accidents. To test this claim, a researcher obtains information about registered drivers from the department of motor vehicles and selects a sample of n = 300 accident reports from the police department. The breakdown of accident reports was as follows

Test the hypothesis that there is no difference between age groups. (25)