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Mathematics 7 Online
OpenStudy (anonymous):

SOMEONE HELP! PLEASE A researcher wishes to design a fully blocked experiment with groups of subjects representing every possible combination of 1 explanatory variable (control versus treatment) and 3 other variables (male versus female, old versus young, healthy versus ill) for a total of 4 variables. How many blocks will there be in her experiment? A. 32 B. 16 C. 4 D. 8

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