The Great Plains Railroad is interested in studying how fuel consumption is rela
ID: 3391506 • Letter: T
Question
The Great Plains Railroad is interested in studying how fuel consumption is related to the number of railcars for its train on a certain route between Oklahoma City and Omaha. A random sample of 10 trains on this route has yielded the data in the table below. number of railers fuel consumption (x-value y-value) 20 58 // 20 52 // 37 91// 31 80 // 47 114 // 43 98 // 39 87 // 50 122 // 40 100 // 29 70
A (3pts) State the sum of square errors.
B (5 pts) State the standard error of the slope and interpret that value.
C (6pts) Calculate the 95% confidence interval for slope.
D (7pts) From the coefficient of determination, standard error of slope, and the confidence interval for slope does that model appear to fit well? Explain.
E (5pts) Use your model (if it fits well – see answer in part k) to predict the fuel consumption for a train with 47 railcars.
F (4 pts) What is the residual value for the fuel consumption for a train with 47 railcars?
G (5 pts) Why would it not be reasonable to use the fitted regression equation to predict the fuel consumption for a train on this route if the train had 75 railcars?
Explanation / Answer
The Great Plains Railroad is interested in studying how fuel consumption is rela
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.