Question
A taxi company in a large city put a new type of tire with a special tread on a randomsample of 50 cars, and the regular type of tire on another random sample of 50 cars.After a month, the gas mileage of each car was measured. a) Is this a randomized experiment or an observational study? b) Assume that one of the samp
Question image 1Question image 2Question image 3