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What is the degree of freedom value for these data? What critical value(s) should Angelica use for NHST? Should Angelica reject or retain null hypothesis?

What is the degree of freedom value for these data? What critical value(s) should Angelica use for NHST? Should Angelica reject or retain null hypothesis? What is r^2?

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Angelica collected data on people's anxiety levels (X) and life satisfaction ()). The scores are below: Data Table ID X Y 1 4 5 6 10 ODOVALAWN OAUNT 8 11 7 12

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