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OpenStudy (adll23):
A scientist wants to test the effects of a certain type of pesticide on corn crops. Each group is sprayed with pesticide a different number of times during one week: group 1 is not sprayed with pesticide, group 2 is sprayed once, group 3 is sprayed twice, and group 4 is sprayed three times. Which of the groups is the control group? group 1 group 2 group 3 group 4
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OpenStudy (james1769):
group 1
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