# 6 a psychologist is interested in knowing whether

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_____________________________6-A psychologist is interested in knowing whether adults who were bullied as children differ fromthe general population in terms of their empathy for others. On a questionnaire designed tomeasure empathy, the mean score for the general population is 51.46. Random sampling of 67scores obtained from individuals who were bullied yielded a mean of 32.05 and a standarddeviation of 12.2. (Use these numbers only for this question!)What is the z-value or t-value you obtained (your test statistic)?
7-A psychologist is interested in knowing whether adults who were bullied as children differ fromthe general population in terms of their empathy for others. On a questionnaire designed tomeasure empathy, the mean score for the general population is 30.6. Random sampling of 25scores obtained from individuals who were bullied yielded a mean of 39.5 and a standarddeviation of 6.6.Test at the .05 level of significance.The value of your calculated (obtained) test statistic is 6.74. What is your decision?
8-A psychologist is interested in knowing whether adults who were bullied as children differ fromthe general population in terms of their empathy for others. On a questionnaire designed tomeasure 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 standarddeviation of 6.6.Test at the .05 level of significance.The best conclusion for this example (based on your answer to Q8) would be
9-A psychologist is interested in knowing whether adults who were bullied as children differ fromthe general population in terms of their empathy for others. On a questionnaire designed tomeasure empathy, the mean score for the general population is 30.6. Random sampling of 25scores obtained from individuals who were bullied yielded a mean of 39.5 and a standarddeviation of 6.6.Test at the .05 level of significance.Based on your evaluation of the null in Q8 and your conclusion is Q9, as a researcher youwould be more concerned with aA-Type I statistical error
10-A psychologist is interested in knowing whether adults who were bullied as children differfrom the general population in terms of their empathy for others. On a questionnaire designed tomeasure empathy, the mean score for the general population is 74.27. Random sampling of 76scores obtained from individuals who were bullied yielded a mean of 71.9 and a standard

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Statistical hypothesis testing, systolic blood pressure