Mathematics, 21.01.2021 22:50 ferg6
A researcher wants to conduct a study to see if cell phones cause headaches. The researcher finds 30 individuals who use cell phones regularly and 30 that do not. Each of the 60 individuals are given a questionnaire designed to determine headache frequency. If the 60 individuals did not know they were participating in the study, which statement about the study is correct?
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A researcher wants to conduct a study to see if cell phones cause headaches. The researcher finds 30...
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