Download the file “gasConsumption_deliverytrucks.”
a) Use statistical software to get the regression equation (14.1).
b) Construct a scatterplot of gas consumption and weight of the cargo, cargo weight. Interpret.
c) Also get the regression equation for gas consumption when
cargo weight is included in the model with the predictors, delivery and miles. Comment on its estimated coefficient.
d) Interpret the coefficient of determination of the model that adds cargo weight.
e) Predict gas consumption when delivery = 15, miles = 15, cargo weight = 200.

Transcribed Image Text:

gas = 0.978 +0.350delivery + 0.117miles (14.1)