Identify which one of the four types of validity--measurement validity, statistical conclusion validity, internal validity, or external validity—is violated in each of the following scenarios. Explain your decision. (20 points) 1. In a longitudinal study of exposure to formaldehyde and cancer, people from the Lower Ninth Ward who lived for more than six months in a FEMA trailer following Hurricane Katrina were compared to people whose homes were spared in the elegant Garden District of New Orleans.2. Students were interviewed in a group setting and asked questions about their attitudes toward dating and sex.3. Citing a South African study that found that circumcision reduced men’s risk of contracting HIV by 45%, the head of urology at a large Midwestern hospital encouraged his uncircumcised patients to undergo the procedure. 4. There were 10 fewer cases of obesity for every 100 people who underwent the exercise intervention (95% CI: -0.25, 0.05).
This question was answered on: May 23, 2022
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