The following is a problem description. Use the mean & variance provided to answer the questions which follow, showing all calculations BY HAND. For all hypothesis tests, you MUST show all 7 steps we have been using and use the CRITICAL VALUE METHOD to make your decision. Treat each question as a separate problem -- we use the same data set but are answering different "research questions".
A) Perform hypothesis testing using mean and variance
B) Apply critical value method for hypothesis testing
C) Calculate mean and variance
D) Show all calculations by hand