Can someone please help?

Evaluating the Fit of a Model Section 13.5 The Road Warrior Trucking Company has kept careful records on ten hauls. The traffic 14 The ger has recorded the haul weight of each truck and its miles per gallon during ten runs the intent of building a regression model. He wants to predict the miles per gallon for a Wa based on the hall weight. The haul weights and miles per gallon information is given he following table. Haul weights are given in thousands of pounds. Table for Exercise 14 - Trucking Miles per Gallon Haul Weight (Thousands of Pounds) 4.6 36 4.8 33 5.1 31 4.0 42 4.7 33 5.2 30 4.5 37 4.6 37 4.2 40 4.5 36 a. What is the dependent variable in the model? b. What is the independent variable in the model? Construct a scatterplot of the data. Based on the scatterplot, does a linear model seem appropriate? Write the model in terms of miles per gallon and haul weight. (Assume the parameters of the model have not been estimated.) e. Use the data provided and estimate the coefficients of the linear model. f. Interpret the coefficient of the independent variable. g. Use the model to predict the miles per gallon for a truck hauling 38,000 pounds. h. Do you believe there is a causal relationship between haul weight and the miles per gallon? If so, which direction is the causality? Do greater haul weights cause reduced mileage, or vice versa? Does the regression analysis prove the causality