"Does maternal stress during the first trimester of a pregnancy affect the infant's birth weight?" is which of the following?
A) A research question
B) A portion of a problem statement
C) A statement of purpose
D) A hypothesis
A
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Research questions are the specific queries researchers want to answer in addressing the research problem. The problem statement articulates the nature, context, and significance of a problem to be studied. A statement of purpose, which summarizes the overall study goal, identifies the key concepts (variables) and the study group or population. A hypothesis states predicted relationships between two or more variables—that is, the anticipated association between independent and dependent variables.
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