1. Three different models of automobiles (A, B, and C) were compared for gasoline consumption. For each model of car, fifteen cars were randomly selected and subjected to standard driving procedures. The average miles/gallon obtained for each model of car and sample standard deviations are shown below. Car A Car B Car C Average Mile/Gallon 42 49 44 Sample Standard Deviation 4 5 3 Use the above data and test to see if the mean gasoline consumption for all three models of cars is the same. Let = 0.05, and use the p-value approaches 1. Formulate the null and alternative hypotheses 2. Select the significance level 3. Select the test statistic and calculate its value. 4. Identify p-value/critical value for the test statistics and state the decision rule 5. Compare calculated and critical values and reach a conclusion about the null hypothesis