for the firm's leading product over the past eight years. (a) Construct a time series plot. What type of pattern exists in the data? The time series plot shows a seasonal pattern. The time series plot shows a horizontal pattern. The time series plot shows a linear trend. 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. (Round your answers to two decimal places.) b0=b1=1 (c) What is the average cost increase (in \$) that the firm has been realizing per year? (Round your answer to two decimal places.) $ (d) Compute an estimate of the cost/unit (in \$) for the next year. (Round your answer to two decimal places.) $