Scientists have developed a new type of margarine containing plant ingredients they think will lower blood cholesterol levels in people who use the margarine. they want to test this by having some people use the new margarine for a while (experimental group) and then compare their blood cholesterol levels with those of a group of people who use regular margarine (control group). this is an example of what type of research design?

Need 5. reflection what factors did you use to determine the validity of your sources? (what was most important and guided your decision to determine validity? ) what factors did you use to determine the reliability of your sources? what was the most important and guided your decision to determine reliability? what form of media resources (internet, publications, music, advertisements, video, etc.) do you think were the most valid and reliable for your question? support your answer. what was your best source? support your answer.