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.Calculate the 99% confidence interval.
Steps:
What is the new critical value you will use for this calculation?
A) ±1.645
B) ±2.064
C) ±2.756
D) ±2.797
E) 6.74