Question: Individuals have their HEI measured on two different days with the first and second day indicated by the variable daycode. A number of researchers argue

Individuals have their HEI measured on two different days with the first and second day indicated by the variable daycode. A number of researchers argue that individuals will have a higher-quality diet for the second interview because they will adjust their diet after the first interview. You are asked to perform an appropriate hypothesis test to determine if there is strong evidence to conclude that individuals have a higher HEI on the second day compared to the first day.

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