Dr. Kalmagura plans on introducing a new exam review procedure in his chemistry classes. To check the effectiveness ofthe new procedure he is going to have half his students try the new technique for one semester, while the remaining students review in the way they have always done in the past. He asks each student to decide which of the techniques they would like to use, the new technique or the standard technique. In this example, Dr. Kalmagura's procedure ilJustrates:.a. the use of non-random assignment. b. a correlational research design. c. a double-blind research design. d. what is meant by informed consent in research.

The correct answer is A.

the use of non-random assignment

Explanation:

Dr. Kalmagura's procedure illustrates the use of non-random assignment

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

answer; adjusting and adapting to a culture other than one's own;