A Researcher Concludes That Stress Levels Are Higher Following a Major

question 31

Multiple Choice

A researcher concludes that stress levels are higher following a major versus a minor traffic accident (95% confidence interval [CI] 1.86-3.02) .If the null hypothesis stated that there would be no difference (null hypothesis: $\mu$ = 0) ,then what is the effect size for this confidence interval?

• A) 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.
• C) Ratings of stress shifted between 1.86 and 3.02 points in the population.
• D) There is not enough information to answer this question.

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