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Scenario A. A researcher at Dunkin’ Donuts wants to study the impact of Super Bowl commercials on donut sales. She measures the number of donut sales at
Scenario A. A researcher at Dunkin’ Donuts wants to study the impact of Super Bowl commercials on donut sales. She measures the number of donut sales at her local store in the week before the Super Bowl on (Feb 5th-11th) and the week after the Super Bowl (Feb 12th -18th).