Can someone help answer the below with step by step? Thanks.

A major oil company has developed a new gasoline additive that is supposed to increase mileage . To test this hypothesis , ten cars are randomly selected . The cars are driven both with and without the additive . The results are displayed in the following table . Can it be concluded , from the data , that the gasoline additive does significantly increase mileage ?" Let d = (gas mileage with additive ) - ( gas mileage without additive ) . Use a significance level of * = 0. 0I for the test . Assume that the gas mileages are normally distributed for the population of all cars both with and without the additive . Car 1 2 3 A 5 6 7 8 9 10 Without additive* 23.6 14.9 26 27.1 23.8 14.7 10.3 21.7 11 18.3 With additive 24.3 16.8 27.3 30. 2 \\27.3 16.9 12.2 24. 4 12.7 \\21.5 Copy Data Step 3 Of 5 : Compute the value of the test statistic . Round your answer to three decimal places