In what follows use any of the following tests/procedures: regression, multipleregression, confdence intervals, one sided t-test or two sided t-test. all the proceduresshould be done with 5% p-value or 95% confdence interval. some answers areapproximated, choose the most appropriate answer. opencars04data. setup: itis believed that the longer the car the lower mileage the per gallon (mpg). given thedata your job is to confrm or disprove this belief.
a. one sided t-test
b. two sided t-test
c. regression
d. confdence interval