**Answer:**

<h2>

**The mean decreases, and the median remains the same.**</h2>

**Step-by-step explanation:**

Remember that a box plot is made by the quartiles of the distribution, the maximum value and the minimum value. So, from a box plot we can deduct the range, the median and the interquartile range.

In this case,** the median remains the same at $9.5 per hour**. The median is indicated by the middle line of the box, and you can observe that it doesn't change.

Now, the range of the data set decreases from 7 to 3.

On the other hand, **the mean must decrease**, because data greater than $11 doesn't exist in the box plot number 2, and the mean is a central measure sensible to those changes.

Therefore, the right answer is <em>**The mean decreases, and the median remains the same.**</em>