AP Statistics Review #4

5. Drying times y (in minutes) are tabulated for various concentrations of pigment x (in grams perounce) for a certain brand of nail polish. A linear regression model givesy = -4.9x +62.3 with the following residual plot:5**0-5** ***xA nonlinear model gives y = -16.8 lnx + 59.8 with the following residual plot:0.3***0.3* * **(a) What does each model predict for the drying time when using 5 grams of pigment per ounce?(b) Which model is a better fit? Explain.