Because of high tuition costs at state and private universities, enrollments at community colleges have increased dramatically in recent years. The following data show the enrollment for a certain community college for the nine most recent 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 nonlinear trend. The time series plot shows a linear trend. 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.) b0=b1= (c) What is the forecast for year 10 (in 1,000s)? (Round your answer to one decimal place.) * thousand students