Question NO .1 2+4+1.5 Consider the following models of forecasting- E (Salest+1) = a + b Xt-1 E (Salest+1) = 1/6 Xt Here X represents sales . the values of a and b are 1000 and 1.02 respectively. The actual sales of last seven years are given below- Year 2014 2015 2016 2017 2018 2019 2020 Sales (tk in thousands) 28300 30200 32165 34190 36277 38500 32200 i.What are the names of the models? Which one is suitable for your forecast? Why? ii.Do the sales forecast under each model for the next 3 years . iii)Which forecasting method should you rely on? Why?