We use observational studies to investigate questions and provide evidence about (Select) and experiments to provide...

 

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We use observational studies to investigate questions and provide evidence about (Select) and experiments to provide evidence for I Select] . Observational studies can also be thought of as answering questions about ( Select ] To establish cause-and-effect relationships, we want to make sure the ISelect| variable is the only thing that impacts the ISelect ] variable. A well designed study will take steps like random assignment to treatment groups, placebos, and blind conditions to try to eliminate I Select] • If we are seeking to see if the Moderna vaccine is effective at preventing COVID-19 infections, we should choose [ Select ] • If we are looking to see if people are wearing masks in public, we should choose ( Select ) We use observational studies to investigate questions and provide evidence about (Select) and experiments to provide evidence for I Select] . Observational studies can also be thought of as answering questions about ( Select ] To establish cause-and-effect relationships, we want to make sure the ISelect| variable is the only thing that impacts the ISelect ] variable. A well designed study will take steps like random assignment to treatment groups, placebos, and blind conditions to try to eliminate I Select] • If we are seeking to see if the Moderna vaccine is effective at preventing COVID-19 infections, we should choose [ Select ] • If we are looking to see if people are wearing masks in public, we should choose ( Select )

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Answer We use observational studies to investigate questions and provide evidence a... View the full answer