Answer:
1 hr on problems and 3 reading
Explanation:
1 hr on problems bc he's able to finish 40 problems which is better than reading for 1 hr since the teacher said reading for 1 hr is equivalent to solving 35 problems. in the 2nd, 3rd and 4th hours he solves less than 35 problems each hour so it's better to just read for an hour.
Where are the answer choices?
The placebo effect, because one group believes they are receiving a new prescription but they are actually taking the same prescriptions they always have. This can also be called a single blind experiment because the test subjects do not know which group they are in (or that there are two groups most likely), but the psychologist(s) know who is taking which prescription/who is in which group.
