Statistical techniques 18?

The management of White Industries is considering a new method of embling its golf cart. The present method requires 42.3 minutes, on the average, to emble a cart. The mean embly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Using the .10 level of significance, can we conclude that the embly time using the new method is faster?