point(s) possible This question: 6 point(s) possible Submit test Assume that the average gas mileage of all automobiles is 20.6 miles per gallon. For a random sample of 50 sport utility vehicles (SUVs), the mean gas mileage is 20.4 miles per gallon with a standard deviation of 3.1 miles per gallon. Test the claim that the mean mileage of all SUVs is less than 20.6 miles per gallon. Use a 0.05 significance level. D Find the z-score. z= (Round to two decimal places as needed.) Find the P-value. The P-value is (Round to four decimal places as needed.) State the conclusion. A. Reject the null hypothesis. There is sufficient evidence to support the claim that the mean mileage of all SUVs is less than 20.6 miles per gallon. O B. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that the mean mileage of all SUVs is less than 20.6 miles per gallon. O C. Reject the null hypothesis. There is not sufficient evidence to support the claim that the mean mileage of all SUVs is less than 20.6 miles per gallon. D. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that the mean mileage of all SUVs is less than 20.6 miles per gallon