Car 1 2 3 4 S 6 7 8 9 10 Without additive 17.3 15.9 24.8 12.6 9.9 26.1 12 25.6 20.9 28.7 With additive 20.3 18.5 26.6 13 12.9 28.7 14.3 29 22.4 29.6 A) What is the null and alternative hypothesis for this test? B)Find the value of the standard deviation of the paired differences. Round your answer to two decimal places. C)Compute the value of the test statistic: Round your answer to three decimal places. D)Determine the decision rule for rejecting the null hypothesis Ho. E)Make the decision for the hypothesis test