The statistical (null) hypothesis in a research study states that there is
a. a causal relationship between variables.
b. a statistically significant relationship between variables.
c. an implied relationship between variables.
d. no relationship between variables.
Question 2
Which is an important feature of a testable hypothesis?
a. It may differ from the variables and population identified in the research purpose.
b. Methods of sampling, measurement, and data analysis are included in the hypothesis statement.
c. Relationships among the study variables must be causative.
d. Variables in a testable hypothesis are measurable or able to be manipulated.
The clonal selection hypothesis
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
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Scientists do research in the laboratory and in the field