In a sample of 54 business trips taken by employees in the HR department, a comp

Question

In a sample of 54 business trips taken by employees in the HR department, a company finds that the average amount spent for the trips was exist1, 452 with a standard deviation of exist442. In a sample of 87 trips taken by the employees in the sales department is exist1, 624 with a standard deviation of exist551. 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 those taken by the HR department what is the test statistic? (please round your answer to 2 decimal places)

Explanation / Answer

using minitab

————— 6/18/2017 11:47:45 PM ————————————————————

Two-Sample T-Test and CI

SE
Sample N Mean StDev Mean
1 54 1452 442 60
2 87 1624 551 59

Difference = (1) - (2)
Estimate for difference: -172.0
95% upper bound for difference: -32.3
T-Test of difference = 0 (vs <): T-Value = -2.04 P-Value = 0.022 DF = 130

t test value =-2.04 is the answer

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