1) Determine the appropriate test to perform
2) Compute the test by hand
3) Confirm your computations with Minitab or an online calculator
4) Apply the results to draw a conclusion
5) Write up the conclusion according to APA format
Are serial killers more introverted than the general population? A sample of 14 serial killers serving life sentences was tested and found to have a mean introversion score of 42 with s = 6.8. If the population mean is 36, are the serial killers significantly more introverted at the .05 level? Perform the appropriate one-tailed test.