Question 2 (4 marks)

The data below shows the number of pints of type A blood used at the Suva Private Hospital for the past 6 weeks:

Week Of	No of litres used
August 10	500
August 17	515
August 24	480
August 31	510
September 7	540
September 14	480

Based on the above, answer the following:

1. Predict the demand for the week of September 21 using a 3-week moving average. (2 mark)

(b) Use a 3-week weighted moving average, with weights of 0.4, 0.6 and 0.7, using 0.7 for the most recent week. Now, forecast the demand for the week of September 21. (2 mark)