The Seneca Children's Fund (SCF) is a local charity that runs a summer camp for dis advantaged children. The fund's board of directors has been working very hard over recent years to decrease the amount of overhead expenses, 21 major factor in how chat- ities are rated by independent agencies. The following data show the percentage of the money SCF has raised that was spent on administrative and fund-raising expenses over the past seven years: Period (t) Expense (96) 1 13.9 12.2 10.5 10.4 1 1 .5 10.0 8.5 'xlChU'i-lh-WM A. Construct a time series plot. What type of pattern exists in the data? A. Use simple linear regression analysis to nd the parameters for the line that mini- mizes MSE for this time series. 6 orecast the percentage of administrative expenses for year 8. . If SCF can maintain its current trend in reducing administrative expenses, how long will it take for SCF to achieve a level of 5% or less