You're an accountant at a paper production plant and now think your monthly costs have changed. The costs have always been $200 but they seem to be disimilar now and you would like to test this claim. If you run the hypothesis test, which of following statements would fit your problem?
A. You have a two tail test
B. Your alternative hypothesis could be stated as the population mean is equal to $200.
C. Your null hypothesis could be stated as the population mean is equal to $200.
D. A and B
E. A and C