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3)Which of the following statements is true with regards to the concept of Research Hypothesis HA? a) it is the decision maker's attempt to demonstrate this hypothesis to be true b) it will not be declared true unless the sample data strongly indicate that it is true c) applies to the Ha d) a, b, care true e) None of these are true f) only a and care true 4)Which of the following statements is true with regards to the concept of Critical Value? a) this cutoff value determines the boundary between regions of acceptance and rejection b) one tail model has two critical value c) two tail model has two critical values with opposite signs d) none of these are true e) only a and care true f) a, b, c are true