Assignment:
Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify this cost difference, insurance companies claim that younger 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 motor vehicle department reports the percentage of registered drivers in each age category as follows: 16% are under 20; 28% are 20 to 29 years old, and 56% are age 30 or older. The number of accident reports for each age group is as follows:
Under Age 20 Age 20 to 29 Age 30 and over
68 92 140
Do the date indicate that the distribution of accidents for the three age groups is significantl different from the distribution of drivers? Test with a = .05.
Do all steps in hypothesis testing
Mulvihill, Obuseh, and Caldwell(2008) conducted a survey evaluating healthcare providers' perception of a new state childrens insurance program. One question asked the providers whether they viewed the reimbursement from the new insurance as higher,lower, or the same as private insurance. another question assessed the providers overall satisfaction with the new insurance. The following table presents observed frequencies similar to the study results
Satisfied Not Satisfied
Less Reimbursement 46 54 100
Same or More Reimbursement 42 18 60
88 72
Do the results indicate that the providers' satisfaction of the new program is related to their perception of the reimbursement rates? Test with alpha= .05
Do all steps in hypothesis testing