An Estimated Regression Equation That Was Fit to Estimate Ductility

Multiple Choice

An estimated regression equation that was fit to estimate ductility in steel using its carbon content was found to be significant at α = 0.05.The 95% prediction interval for the ductility of steel with 0.5% carbon content was determined to be 0.45 to 11.59.The correct interpretation is ________________________ .

A) we can be 95% confident that the ductility of a particular type of steel with 0.5% carbon content is between 0.45 and 11.59
B) we can be 95% confident that the average ductility of all steel with 0.5% carbon content is between 0.45 and 11.59
C) the ductility of steel with 0.5% carbon content will be between 45 and 11.59 most (95%) of the time
D) 95% of the time the average ductility of steel with 0.5% carbon content will be between 0.45 and 11.59
E) we can be 95% confident that all steel with have ductility measurements between 0.45 and 11.59