The randomized block design with two treatments is equivalent to a non-directional dependent samples z-test.

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The randomized block design is an experimental design used to control for the effects of known potential confounding variables, and it typically involves more than two treatments or compares different treatments, not just two. A non-directional dependent samples z-test is used to compare the means of two related groups, assuming the difference scores are normally distributed. These are different statistical methods used for different types of data and research questions.

The Randomized Block Design with Two Treatments Is Equivalent to a Non-Directional