The Committee for Arts and Lectures CAL) wants to test different promotions for a series of plays.Which statement is true about the following experiment? R X₁ O₁ --------------- R X₂ O₂ --------------- R X₃ O₃ -------------- A)It compares three treatment levels, corresponding to three "levels" of promotion. B)X₁ refers to the observation or measurement of the first group. C)It includes a separate control group. D)It can be classified as a matched control group design. E)None of the above.

Question

Quizplus · Accepted Answer

The experiment compares three treatment levels, each with a different level of promotion. The different levels are denoted by the different codes (X₁, X₂, X₃). Therefore, option A is the correct choice. Option B is incorrect because X₁ does not refer to an observation or measurement but represents a treatment level. Option C is not explicitly stated, but it is possible that one of the treatment levels served as a control group. Option D is incorrect because there is no mention of matching in the experiment.

The Committee for Arts and Lectures CAL) Wants to Test