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Question 2: The sales data of a company’s sales records is provided in the attached dataset....

Question 2: The sales data of a company’s sales records is provided in the attached dataset. (10 marks – 2 for each part) a) Plot a time-series plot of these data b) Fit a linear trend line to these data. c) Conduct a hypothesis test of the linear trend model developed in part b. Use a level of significance of 0.05 d) State the predicted value of sales from 2005 to 2021 e) Calculate MAD and MSE for the linear trend forecasts developed.

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