Use the Excel Data Analysis Toolpack to fit a straight line to the following data. Determine the 90% confidence interval for the intercept. If it encompasses zero, redo the regression, but with the intercept forced to be zero (this is an option on the Regression dialoguebox).

Transcribed Image Text:

10 12 14 6.5 25.8 26.9 7. 17.8 13 19