Question: 11 ile = ARA Please solve Q1 and Q2 using Excel, Q3 manually 01: Refer to the company's sales time series data as follow: Year

11 ile = ARA Please solve Q1 and Q2 using Excel, Q3 manually 01: Refer to the company's sales time series data as follow: Year Demand Level January 445 February 451 Marsh 454 April 427 May 451 June 442 July 428 August 476 September 496 October 517 A. Compute a two-month weighted moving average for the time series using weights (5,3) and compute all mean errors. (2 mark) B. Use a=0.8 to compute the exponential smoothing values for the time series. Compute all mean' errors that we learned, then compare it with a=0.6 which one is better? and why? (2.5 marks) Notice that the first forecast 450 C. Use this table to compute the forecast by using the linear regression in excel and provide me with the equation of estimated Y. what is the forecast for November and December? (manually) (2mark)

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