In a hypothetical study, researchers found that the average donut sold by krispy kreme contains 260 calories, with a standard deviation of 35 calories (treat these as population data). At stores where calorie information was located next to the menu items, the average donut sold contained only 240 calories (treat this as sample data). Based on this information, cohen's d equals:
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where calorie information was located next to the menu items, the average donut sold contained only 240 calories (treat this as sample data). Based on this information, cohen's d equals
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