Researchers have reported that elderly people who own pets are less likely to visit the doctor after upsetting events than those who do not own pets. A researcher compares a sample of elderly pet owners to a group that does not own pets but is otherwise matched for age and income. The data that are recorded (see below) are number of visits to the doctor in the course of a year. We would like to determine if these data support the previous findings. Pet owner : 9 0 3 3 4 3 5 2 11 5 Non-owner: 11 5 10 7 5 4 9 6 13 9 5 8 What is the (quasi-)independent variable? What is the dependent variable? State the Null Hypothesis:. State the Alternative Hypothesis:.
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Siegel (1990) found 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 of 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: Control Group Dog Owners 10 7 8 4 7 9 9 3 13 7 7 6. a. Is there a significant difference in the number of doctor visits between dog owners and control subjects? Use a two-tailed test with α = .05.
T. L.
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 of 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 Owners: 8 5 9 4 6 Control Group: 12 10 6 9 15 12 14 Is there a significant difference in the number of doctor visits between dog owners and control subjects? Use a two-tailed test with α = .05.
Joshua A.
Determine whether the claim represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis? (b) fails to reject the null hypothesis? A researcher claims that less than $16 \%$ of people had no health care visits in the past year.
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