STUDY: A researcher is interested in genetic links to panic disorder. She selects a sample of 500 people from a Psychology 101 class. Each participant is given a structured interview to determine if they have panic disorder. Two groups are created (panic disorder and no panic disorder). All participants are given a questionnaire to determine the number of relatives who have anxiety disorders. The researcher calculates if the group of participants with panic disorder differs from the group of participants without panic disorder in the number of relatives with anxiety disorders.
What is (are) the research hypothesis (or hypotheses) in the study described above?
A) There are two research hypotheses: that there are people with panic disorder and that they have relatives with anxiety disorders.
B) There is one research hypothesis: that people have panic disorder.
C) There is one research hypothesis: that people with panic disorder differ in the number of relatives with anxiety disorders from people who do not have panic disorder.
D) There is one research hypothesis: that people who have relatives with anxiety disorders will have panic disorder.
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