hypothesis testing

[Math085]

Hi, i need help with this question.

In a study by Mino et. al. (2006), 50 workers in high-stress jobs were randomly split between a stress-management group and a control group.
After 3 months, the Center for Epidemiologic Study for Depression Scale showed that employees in the control group had a mean of 3.93 depression symptoms with variance of 2.69, while those in the treatment group had a mean of 3.10 and variance of 2.47. The research hypothesis was that those in the stress-management group would have fewer symptoms. What was the test statistic in this one-tailed t-test?

Does this mean that the difference between means = 3.93-2.69 or should it be the other way round (ie 2.69-3.93)

Also since this is a left tail test, does it mean the answer should be negative.