The file P12, 12 de contains five years of monthly data on sale (number of units sold) for a particular company. The company suspects that not for randomises growing by a constant percentage each month and will continue to do so for at least the near future a. Explain briefly whether the lot of the series visually supports the company's suspicion. An exponential fit looks reasonable. The graph of Wales shows some sign of interesting at an increasing rate, but the orch at the sales vis cauty b. it the appropriate regression model to the data. Hapart the resulting wouation Let x represent the time Index und your answer to three decimal places, Decorary For Hotective or negative rumbers in vion we this before the bank (200) LV) 3706.4 3706.4 State explicitly what it was about the percentage crowth per month Round your answer to one decimal place, incestry The equation impian approximate Increase per What fra the HSE and MAPE for the forecast model in part by Round your answer to two decimal planetary ME MAPE te words, what do there! forecastro TUMSE measures the war of these HAPE measures the web parce forecast d. Given the forecast value for the last month in the data at what smole within tuld you to obtain forecast for the next few month Round your arts four dem placesIf necessary Starting with the last forecast value for month 60. ltiply each forecasted value by to obtain the stone B D E Month 1 Sales 5600 This is fictitious data. 2 5740 6230 3 4 5 6 7 6210 7090 7130 8 6690 6080 8040 9 10 8030 1 2 3 4 11 12 13 14 15 16 17 18 5 16 17 18 19 20 21 22 23 24 7720 8200 7980 6930 8310 6870 7330 7670 7490 10230 10230 11010 11920 19 20 21 22 23 25 24 25 11530 13070 12700 26 26 27 28 29 27 12000 28 12700 29 30 31 32 33 34 35 36 37 38 39 40 41 11970 15690 17020 16980 15330 14890 15130 14630 15990 15910 16510 17060 18080 18220 16940 16600 17650 18070 17930 17150 19100 22090 20540 22250 23170 23610 26370 42 43 44 45 46 47 5 7 8 9 0 1 48 49 50 51 -3 52 23456 . 55 53 54 55 47 17930 48 17150 49 19100 50 22090 51 20540 52 22250 53 23170 54 23610 55 26370 56 26320 B B 57 24710 9 58 24150 0 59 24390 60 24360 1 2 53 54 65 66 67 62