Question 45

Q8Short answerExercise 13.3

The mileage (km per litre) of 50 cars of the same model was tested by a manufacturer and details are tabulated as given below : Mileage (km/l) 10-12 12-14 14-16 16-18 Number of cars 7 12 18 13 Find the mean mileage. The manufacturer claimed that the mileage of the model was 16 km/litre. Do you agree with this claim?

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14.48 km/l; No, the manufacturer is claiming tt © mileage 1.52 km/h more than the average mileage