Consider the following time series. 1 2 3 4 5 6 7 Yt 132 111 105 98 95 91 89 (a) Choose the correct time series plot. (0) 1407 120 100 yt 80 . 60 40 20 0 3 4 5 (ii) 1407 120 100 80 yt 60 40 (b) Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series. If required, round your answers to two decimal places. Use a minus sign for negative numbers, if any. y-intercept, bo Slope, bi MSE = (c) What is the forecast for t-8? If required, round your answer to one decimal place. 77.5