Question 32 16 pts 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 20 22 23 20 21 / 22 24 21 21 / 21 24 21 22 1 21 24 21 Test the claim that the four different models have the same population mean. Use a significance level of 0.025. Use the p-value method of hypothesis testing. Enter the test statistic. (Round your answer to nearest tenth.)