As the carbon content in steel increases, its ductility tends to decrease A rese
ID: 3158563 • Letter: A
Question
As the carbon content in steel increases, its ductility tends to decrease A researcher at a steel company measures carbon content and ductility for a sample of 15 types of steel. Based on these data he obtained the following regression results Answer the following questions: What is the 95% confidence interval for the slope of the regression equation? Do you think the Least Square Estimate resulted to a good fit model? If it is not what do the researcher do to get a good fit linear regression ModeExplanation / Answer
a)
95% of the slope
-3.296 +/- 1.097
-4.393 < B1 < -2.199
b)
No because is very lower, it need to be at least 50%
c)
need to see what values are outliers and take away those values of the regression to have a better good fit model
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