A customer was interested in comparing the top speed (in kilometres per hour) of two models of snowmobiles. The customer selected two independent random samples of the snowmobiles and calculated the following summary information:

Model A Model B

Sample Size 8 9

Sample Mean 90 84

Sample Standard Deviation 3 5

Assume the distribution of top speeds is approximately normal and variances are equal. Given = 0.05, is there a significant difference in average top speed between the two models of snowmobiles? Perform the appropriate hypothesis test.