We will analyze the difference in the fuel efficiency of two new brands of hybrid vehicles. The standard deviations of these two populations are unknown, but the engineers from these companies believe that they are equal. A sample of 36 hybrid vehicles produced by Forde Motors had a mean of 63.6 MPG and standard deviation of 5 MPG, and a sample of 41 hybrid vehicles produced by GeM motors had a mean of 67.2 MPG and standard deviation of 4.4 MPG. Aclaim is made that the mean fuel efficiency of the Forde hybrid vehicle {Jul} is greater than the mean fuel efficiency ofthe GeM hybrid vehicle \"12}. For each part below. enter only a numeric value in the answer box. For example, do not type "2 =" or "t =" before your answers. Round each of your answers to 3 places after the decimal point. {a} Calculate the value of the test statistic used in this test. Test statistic's value = [b] Use your calculator to find the P-value of this test. P-value =