In a sample of 55 business trips taken by employees in the HR department, a company findsthat the average amount spent for the trips was $1,413 with a standard deviation of $443. Ina sample of 81 trips taken by the employees in the sales department is $1,617 with astandard deviation of $534. When testing the hypothesis (at the 5% level of significance) that the average amount spent on trips taken by the sales department are higher than thosetaken by the HR department what is the test statistic? (please round your answer to 2decimal places)