In experimental research an investigator normally prefers to formulate null hypotheses rather than research hypotheses because
A. It is easy to formulate null hypotheses.
B. It is wrong to formulate research hypotheses.
C. Null hypotheses are statistically testable.
D. None of these
Answer:C
In experimental research an investigator normally prefers to formulate null hypotheses rather than research hypotheses because
A. It is easy to formulate null hypotheses. B. It is wrong to formulate research hypotheses. C. Null hypotheses are statistically testable. D. None of these