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What is the new critical value for calculation

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A sociologist wants to know whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.

What is the 99% confidence interval?

What is the new critical value for this calculation?

Reference no: EM132037400

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