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Sample Size for Criminology

A criminology professor has been teaching graduate and undergraduate statistics for a few years. Her records show that the overall mean for final exam scores is 82 with a standard deviation of 10. The professor believes that this year's class is superior to her previous classes. She decides to conduct a test on the 25 students enrolled in one of her statistics class. Construct and interpret 95% and 99% confidence intervals. Assume that the professor increased her sample size to 50 when she analyzed another section of her statistics classes. Perform the same tests and describe how your conclusions would differ.

Solution Summary

The solution constructs and interprets confidence intervals.