Read the following description of a data set.

Question

The manager at a new bank wants to hire enough tellers to ensure no customer waits in line too long. To gather more information, she waits in line at other local banks.
At each bank the manager notes the number of teller windows that are open, x, as well as the number of minutes she has to wait in line before being served, y.
The least squares regression line of this data set is:
y=
–
0.829x+7.893
Complete the following sentence:
The least squares regression line predicts that for each additional open window, the time spent waiting in line decreases by
minutes.

Answer 1

The least squares regression line predicts that for each additional open window, the time spent waiting in line decreases by 0.829 minutes.