A compact car was driven at a speed track to examine how the fuel efficiency varies with its speed (km/h). The informati

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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

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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 1
A Compact Car Was Driven At A Speed Track To Examine How The Fuel Efficiency Varies With Its Speed Km H The Informati 1 (46.01 KiB) Viewed 31 times
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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 information of the data are shown below. ∑i=19​X2=91,500,∑i=19​X=900,∑i=19​XY=10,206,∑i=19​Y2=1178.823,∑i=19​Y=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)
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