À la louche

In this quiz game, your answer is always a number. Nonetheless, we generally don't expect you to find the exact answer, but rather to give a range in which it is. The smaller the range, the more points you get! So here's one: how many correct answers will you give? 12 to 15? Or more 4 to 6?
The game ends when a player reaches 15 points.

—description from the publisher (translated)