APFIVE Randomized Block Design Assignments
A researcher tests four diet plans using a randomized complete block design with participants blocked by initial BMI. If there are 5 blocks, how many different possible treatment assignment patterns exist across all blocks?
A
(4!)^5 = 7,962,624
B
5^4 = 625
C
4! × 5! = 2,880
D
4^5 = 1,024
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