Professor boredom has noticed that his students keep falling asleep during his lectures. he thinks that keeping the lights in the lecture hall on at their brightest level will to keep students awake. he decides to give the same lecture to three groups of people. he holds one class session with bright lights, one class session with normal lighting, and one class session with dim lights. professor boredom has a teaching assistant count the number of sleepers at the end of each class. the dependent variable(s) in the above experiment is (are)

The dependent variable in the experiment is the number of students sleeping.

Explanation:

A dependent variable is what is being studied and measured in the experiment. In contrast, the indpendent variable is the thing that is changed that can alter the dependent variable. In the experiment the indpendent variable is the brightness of the lights. The brightness of the lights can alter how many students sleep in his class.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

c: in the east might be the correct answer