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Null and Directional Hypothesis

Part A: There is an advantage in stating the hypothesis both in the null and in the alternative; it adds clarity to our thinking of what we are testing. Explain.

Part B: It is advantageous to develop a directional hypothesis whenever we are sure of the predicated direction. How would you justify this statement? Explain.

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Part A: There is an advantage in stating the hypothesis both in the null and in the alternative; it adds clarity to our thinking of what we are testing. Explain.

A null hypothesis is a statement that there is no actual relationship between variables. It may read, "There is no difference between..." It states the opposite of what the experimenter would expect or predict.
Alternative hypothesis states a potential outcome that the researcher may expect. It comes from prior studies and it is established when a null hypothesis is rejected. Most often, an alternative hypothesis is the desired conclusion of the experimenter.

There is a need to state and test the null hypothesis to determine whether the data provide sufficient result to pursue some alternative hypothesis. When the null hypothesis is used in research, it is presumed sufficient that it explains the data unless proved otherwise by statistical evidence which is in form of a ...

Solution Summary

The solution explains the following statements:
1. There is an advantage in stating the hypothesis both in the null and in the alternative; it adds clarity to our thinking of what we are testing.
2. It is advantageous to develop a directional hypothesis whenever we are sure of the predicated direction.

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