module 7 help.docx - 1 A psychologist is interested in...

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1. A psychologist is interested in knowing 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 obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6.
2. A psychologist is interested in knowing 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 54.76. Random sampling of 90 scores obtained from individuals who were bullied yielded a mean of 41.9 and a standard deviation of 20.26. What is the z-value or t-value? 3. A psychologist is interested in knowing 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 93.39. Random sampling of 76 scores obtained from individuals who were bullied yielded a mean of 97.5 and a standard deviation of 22.87. Calculate the 99% confidence interval.

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