Province of British Columbia has been spending ten million dollars annually on educating young adults about the dangers of opioid use. The following data show the percentage of young adults in British Columbia over the period of 11 years who used opioid at least once.

Year Percentage of young adults who used opioid at least once 1 7.8 2 7.5 3 6.6 4 5.9 5 5.9 6 5.8 7 4.8 8 5.6 9 5.6 10 4.3 11 3.9

1. Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series. 2. What is the forecast for the year 12?