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Null & Alternate Hypotheses and Test Statistic

I need the null hypothesis and the alternate.

I also need the test statistic so I can calculate the problem.

The management of white Industries is considering a new method of assembling its three-wheel golf cart. The present method requires 42.3 minutes on the average to assemble a cart. The new method was introduced, and a time and motion study was conducted on a random sample of 24 carts. The mean assembly time was computed to be 40.6 minutes. The standard deviation of the sample was 2.7 minutes. Using the .10 level of significance, can it be said that the assemble time under the new method is significantly less than before?

Solution Summary

Solution gives the null and alternate hypotheses as well as the test statistic for a gold cart company. Attached as Word.