Experiment: Why are we sleepy in N100?

Identical twins Ian and James are signed up for N100 at 1:00 pm.
Every day, the twins notice that they are sleepy in class and want to know why.

Observation: We are sleepy in N100
Question: Why are we sleepy in N100?
Hypotheses: (must be testable):

1. We are sleepy because we eat lunch right before class.
2. We are sleepy because we sit in the back of the room, away from the watchful eyes of Dr. Marrs .
3. We are sleepy because the classroom is too warm.
4. We are sleepy because Dr. Marrs is, like, totally bo-ring!

Test each hypothesis, have Ian be the 'control' and James test the variables:

1. Experiment: Ian eats lunch before class, but James waits to eat.

Predicted result that would support this hypothesis: Ian will still be sleepy, but James will be alert.

2. Experiment: Ian stays in the back of lecture hall, but James grabs a front-row center seat.

Predicted result that would support this hypothesis: Ian will still be sleepy, but James will be alert.

3. Experiment: Ian dresses in the usual way for class, but James puts on shorts and a T- shirt.

Predicted result that would support this hypothesis: Ian will still be sleepy, but James will be alert.

4. Experiment: Ian stays in this section of N100, but James takes a 1:00 section with another instructor.

Predicted result that would support this hypothesis: Ian will still be sleepy, but James will be alert.

Explain the results: Based on the results of the experiments, it appears that .....(...whatever...)....
Note: Two individuals are not a reliable sample size!

Once enough data are collected, from many university students, in many classes, scientists may develop a theory that BEST explains the available evidence.