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5 2 pts You want to determine if taking vitamins has an effect on the number of colds people get You ask subjects two questions

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5 2 pts You want to determine if taking vitamins has an effect on the number of colds people get You ask subjects two questions 1 Do you regularly take vitamins and 2 How many colds have you had in the last six months You record and compare these results Is this an observation or an experiment

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