Answer:
Part A:
The cofounding variable is a factor that could cause a result on the experiment. This would be the people taking extra food.
Independent variable would be being asked to sign in or not and take free food, because independent variable is a variable that is changed or manipulated and in this case the people were split in half and the hypothesis is that the people who didn't sign in would take more food.
Operational definitions are important when conducting research because it defines all the variables in the experiment, so it can be replicated. The operational def for the dependent variable would be "Doing the right thing even though you aren't being watched"
Part B:
The data does not support the hypothesis because even the people who signed in could've taken extra food when the dean wasn't looking. The findings cannot be generalized to all students because some students could have been taught better and can differentiate between right and wrong. So the people who were not signed in could've just taken one burger and drink, and the people who were signed in might feel obligated to take more than one burger because they had signed in and didn't just come without signing in.
The study is not a naturalistic observation because the observer did not look at the people who took the food and which side took more food.
Answer:
His error will be tat e multiplied te distance covered by te mouse by 3hours
Explanation:
he concluded that the mouse travel 3/8 of a mile each hour what is Matt's error
would ave been the conclusive part of the question
. solution
the total distance travelled in three hours is
3/24 mile
each hour the mouse will travel 
speed is distance travelled per time
s=distance/time
1/24 mile for every hour
matt concluded bte mouse travelled 3/8mile for every our
His error will be tat e multiplied te distance covered by te mouse by 3hours