Premise: "A woman in a black leather mini-dress and boots is shopping from a street vendor."\nHypothesis: "The woman is going to make a purchase."\nDo we know that the hypothesis entailed by the premise?
Let's be accurate as possible and think first.
it is not possible to tell
Shopping from a street vendor does not imply that she will be going to make a purchase.

.

Therefore, the answer is it is not possible to tell