a) Run the stationary test. Is the data stationary?b) If the data is stationary, what is the appropriate Box-Jenkins model to use on the original data in Table 1?c) What are your forecasts for the...

a) Run the stationary test. Is the data stationary?b) If the data is stationary, what is the appropriate Box-Jenkins model to use on the original data in Table 1?c) What are your forecasts for the first four weeks of year 3?d) How do these forecasts compare to actual sales?e) Would you use the same Box-Jenkins model if the new data in Table 2 were combined with the old data in Table 1?