Consider the following time series data. (a) Construct a time series plot. What type of pattern exists in the data? The time series plot shows a horizontal pattern. The time series plot shows a linear trend. The time series plot shows a seasonal pattern. The time series plot shows a nonlinear trend. (b) Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series. b0=b1= (c) What is the forecast for t=6