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Based on the description of Kanner and colleagues' study on hassles and symptoms, identify the two main variables studied, the exact correlation coefficient found in their sample, the definition of the null hypothesis in this context, and the final decision they made regarding the null hypothesis.
Question: Based on the description of Kanner and colleagues' study on hassles and symptoms, identify the two main variables studied, the exact correlation coefficient found in their sample, the definition of the null hypothesis in this context, and the final decision they made regarding the null hypothesis.
Sample answer: In Kanner and colleagues' study, the two main variables studied were daily hassles and psychological symptoms. They found a sample correlation coefficient of . The null hypothesis in this context was the assumption that there is no correlation between daily hassles and psychological symptoms in the population. The researchers made the decision to reject the null hypothesis.
Key points:
- Identify daily hassles and psychological symptoms as the variables.
- State the sample correlation coefficient of .
- Define the null hypothesis as the assumption that there is no correlation in the population.
- State that the researchers rejected the null hypothesis.
Rubric: To earn full credit, the response must correctly name both variables (daily hassles and psychological symptoms), state the sample correlation coefficient (), define the null hypothesis (no correlation between the variables in the population), and identify the decision made (rejecting the null hypothesis).
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Research Methods in Psychology - 4th American Edition @ KPU
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Based on the description of Kanner and colleagues' study on hassles and symptoms, identify the two main variables studied, the exact correlation coefficient found in their sample, the definition of the null hypothesis in this context, and the final decision they made regarding the null hypothesis.
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Suppose another research group replicates Kanner's study design but finds a sample correlation coefficient of only between daily hassles and psychological symptoms. Applying the logic of null hypothesis testing demonstrated in Kanner's study, what decision should this research group make regarding the null hypothesis, and why?