Four students plan to conduct an experiment with four conditions (a, b, c, and d) during one semester. each student will serve as an experimenter. the best way to control for the extraneous variable of having four experimenters test participants in the study is to

have each experimenter test randomized blocks of conditions.

Step-by-step explanation:

Randomized block design is a technique used in controlling nuisance in an experiment due to excessive variables, experimental conditions, etc which can make the experiment complex/ complicated.

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step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.