Answer:
I believe it has infinite solutions
Step-by-step explanation:
Some of the 50 students should have been assigned to a control group that used the in-person course
-0.274
You could just use the calculator, BUT if you want to use pencil paper you have to align them decimal over decimal:
-2.074
- 1.8
-------------
16
-23, -20, -16, -10, -1, -1, 0, 0, 7, 10, 10, 11, 15, 16, 16, 17, 17, 17, 17, 19, 19, 22, 22, 24, 25, 25, 29, 35