The general public’s exposure to chromium is typically due to which of the following?
a. ingesting contaminated water
b. direct contact with products containing the mineral
c. agricultural production
d. airborne pollutants
a. ingesting contaminated water
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An artificially created situation that allows the researcher to manipulate variables and to introduce control variables is known as a(n)
A. survey. B. experiment. C. replication. D. research design.
Overall, more people in this study did not reoffend than did reoffend. (True or False)
Indicate whether the statement is true or false
Briefly describe an open stratification system with an example.
What will be an ideal response?
A major drawback in using experimental designs in research on intimate relationships is that:
A) many important aspects of relationships (factors) cannot be manipulated. B) they do not tell us about causal connections between variables. C) appropriate samples are never possible to obtain. D) they are unethical because they require the manipulation of intimate aspects of relationships.