Alocal university produced a study in which it chose 1000 students to participate. the study asked each student to write down the number of hours spent studying in a one week period. which element of experiment design is known to be a part of this study?

The correct answer is REPLICATION

Step-by-step explanation:

Replication is important for the support of the study. It is when a procedure repeats using the same methods, different subjects and experiments. It also involves the application of the theory of the study in new situations in order to generalize it. Replication assurances the validation and reliable of the results, generalize them

First you want to multiply 3 by the f and negative four so you will see -3f+12-10f2 and to make things less confusing, bring the last two and multiply it with the -10f so you get -20 f so you should have -3f + 12 - 20f. Now what you want to do is bring the - 20f on the other side so now you should be seeing -20f - 3f + 12, after this, you want to subtract the -20f and the -3f and you should have -23f because they both were negative, so now what you have and/or should be seeing is -23f+12 so now there is no other ways of manipulating this in any way shape or form so -23f + 12 should be your answer.