9. take a look at number 5. Using 95% confidence level, estimate the interval of predicted Free Cash Flow at the 16^th year and interpret the result.

10. How can you reduce predictive errors of your predictive model except for increasing sample size? Suggest a way and discuss why.

The following table is the result from regression analysis of the relationship between time passage and cash flow from operating activities. As x variable is time, the analysis is also referred to as time-series analysis