| A personal manager has found that historically, the scores on aptitude tests given to applicants for entry-level positions follow a normal distribution with standard deviation 32.4 points. A random sample of nine test scores from the current group of applicants had mean 187.9 points. Find an 80% confidence interval for the population mean score of the current group of applicants. |
Carlos Rodriguez <carlos@math.albany.edu>
This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind