Mathematics, 26.06.2020 16:01 lezapancakes13
The effect of the time of day a psychology class is taught on test scores is being studied in an experiment. The difficulty of test questions has been identified as an extraneous factor that could also affect test scores. How can the difficulty of test questions best be addressed to minimize its effect in the experiment? A. Direct control by requiring every class to take the same test B. Blocking into groups based on the teacher of the class C. Replication of the experiment at different times of the year D. Randomization of students in morning and afternoon classes
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Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?
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Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.
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Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.
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