In a study in an underdeveloped country, it is expected that urban residents will react more favorably than rural residents to a promotion encouraging family planning.It is important to ensure that the experimental groups will not differ on this dimension. Which of the following is/are true? 1-The study should control for the urban-suburban variable by adding a block effect. 2.This type of study design can be represented by 3.This type of study design can be represented by R X₁, O₁) ----------- R X₂, O₂) ----------- R X₃, O₃) ----------- R X₄, O₄) A)1 B)2 C)3 D)1 and 2 E)1 and 3

Question

Quizplus · Accepted Answer

The statement "The study should control for the urban-suburban variable by adding a block effect" is true, as this will ensure that the experiment groups do not differ on the dimension of urban/rural residence. The statement "This type of study design can be represented by 11eb4ad9_925f_4db7_8c7b_91b99b843e33_TB3180_00" is not relevant to the question and cannot be verified without additional context. The statement "This type of study design can be represented by R X₁, O₁) ----------- R X₂, O₂) ----------- R X₃, O₃) ----------- R X₄, O₄)" is also not directly relevant to the question, but it may represent a randomized block design with urban/rural residence (U) as a blocking variable and four different treatment groups represented by X₁, X₂, X₃, X₄. However, without additional information, it cannot be confirmed that this is the correct interpretation of the design notation.

In a Study in an Underdeveloped Country, It Is Expected