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1.3 /1.3 DtS Question 10 A researcher concludes that stress levels are higher following a major versus a minor traffic accident (95% confidence interval [Cl] 1.86-3.02). If the null hypothesis stated that there would be no difference (null hypothesis: p = 0), then what is the effect size for this confidence interval = s Between 1.86% and 3.02% of the variability in stress levels can be accounted for by type of traffic accident. b. Ratings of stress shifted more than 1.86 points in the population. s Ratings of stress shifted between 1.86 and 3.02 points in the population. d 'her€ is not enough information to answer this question, i