I am having a hard time solving this question. Help would be greatly appreciated!

1. Research has shown that elderly people who owned dogs were less likely to pay visits to their doctors after upsetting events than were those who did not own pets.Similarly, consider the following hypothetical data. A sample of elderly dog owners is compared to a similar group (in terms or age and health) who do not own dogs. The researcher records the number of visits to the doctor during the past year for each person.The data are as follows:

Dog OwnersControl Group

812

510

9 6

4 9

615

12

14

a)Is there a significant difference in the number of doctor visits between dog owners and control subjects? Use a two-tailed test with = .05.