Compare several treatments using the double-blind method.

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Reference no: EM131761944

Question: Two essential features of all statistically designed experiments are

(a) compare several treatments; use the double-blind method.

(b) compare several treatments; use chance to assign subjects to treatments.

(d) use a block design; use chance to assign subjects to treatments.

(e) use enough subjects; always have a control group.

Reference no: EM131761944

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