Answer:
mk, ill answer it in the comments give me a minute to look over it okay?
Answer:
single-blind.
Explanation:
Single-blind study is a human clinical trial method where only the subject examiner knows what is being used as a variable at any given time. It is commonly used as a criterion for validating quantitative experimental practices in science.
An example of this can be seen in the question above, where only the researcher knows which method is under investigation, while the research participants know nothing.
B. 4 The boll weevil migrated into the United States from Mexico in the late-1800s, and by the 1920s had devastated the cotton industry in the American south. Pesticides created in the 20th century eradicated the beetle, though with great human and environmental costs.
Research that describes the strength of the relation between two or more events or characteristics is known as Correlation Research.
