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A compact car was driven at a speed track to examine how the fuel efficiency varies with its speed (km/h). The informati
Posted: Thu Jul 14, 2022 4:48 pm
by answerhappygod
- A Compact Car Was Driven At A Speed Track To Examine How The Fuel Efficiency Varies With Its Speed Km H The Informati 1 (43.41 KiB) Viewed 48 times
A compact car was driven at a speed track to examine how the fuel efficiency varies with its speed (km/h). The information of the data are shown below. i=1∑9X2=91,500,i=1∑9X=900,i=1∑9XY=10,206 i=1∑9Y2=1178.823,i=1∑9Y=102.68 i. Estimate the simple linear regression equation of fuel efficiency on speed. What is the predicted fuel efficiency if the speed of the vehicle is 92 km/h ? (4 marks ii. Test at α=0.01 level of significance whether there exists a positive linear relationship between fuel efficiency and speed. ( 9 marks) iii. Determine the strength of the linear relationship between fuel efficiency and speed. Interpret your result. (2 marks)