Whether confounding is an issue with this study or not.

Study design
asked 2021-02-11
Whether confounding is an issue with this study or not.

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In the study, design firm uses one page in Denver area and the second page in Miami area. It is possible that one area may be cold and the other may be sunny. People usually use hardware in the sunny season. Therefore, the visiting time and money spent by a visitor will be high in the sunny area.
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