Question 1082861
If one does a two sample t-test, the t-value is 1.75 with a p-value being 0.047 for a one way test (which is wanted here).
That is t df=20=(x1bar-x2bar)/sqrt{(s1^2/n1)+(s2^2/n2)}

A comment was made about paired sample data.
This study would be ideal for that, since each person would be his or her own control.  Then the d, the difference would have its own mean, sd and fewer df.
The test might well be significant there BUT, there are 12 in sample 1 and 10 in sample 2.  A paired t-test needs equal numbers in the two samples.  If I removed 11 and 12 from sample 1, it is not significant, but there is no justification to do that other than mathematical.