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A group of researchers want to determine if life satisfaction declines following divorce. To test this...

A group of researchers want to determine if life satisfaction declines following divorce. To test this hypothesis, they collected data on life satisfaction from 45 individuals at two time points: 6 months before divorce and 1 month after divorce. They observed that the average life satisfaction at time 1 was 6.5 and the average life satisfaction at time 2 was 5.9. The sum of squares for the difference scores (SSD) was 210. Use the critical-value approach for a dependent samples t-test (where α = .05) to determine if there is a significant decline in life satisfaction following divorce. 1. Identify the alternative hypothesis 2. List your degrees of freedom 3. List your estimated standard error 4. List your t test statistic (where: Time 2 – Time 1) 5. List your critical t value(s) 6. Is the decline in life satisfaction following divorce statistically significant? (Yes/No) 7. Calculate Cohen’s d for the difference in life satisfaction

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