SCENARIO 3: Random samples of four different models of cars were selected and the gas mileage of each car was measured. The results are shown below. Model A Model B Model C Model D 23 28 30 25 25 26 28 26 24 29 32 25 26 30 27 28 Test the claim that the four different models have the same population mean. QUESTION 15 Referring to Scenario 3, the decision is: O Reject null hypothesis, means are different O None of the other choices is correct O Reject null hypothesis, means ans are not different O Fail to reject null hypothesis, means are not different