Consider the following time series. t 1 2 3 4 5 6 7 121 111 105 99 95 93 89 (a) Construct a time series plot. What type of pattern exists in the data? O The time series plot shows a linear trend. O The time series plot shows a seasonal pattern. O The time series plot shows a nonlinear trend. O The time series plot shows a horizontal pattern. (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.) bo = b, = -5.07 (c) What is the forecast for t = 8? (Round your answer to one decimal place.)

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