I conduct a study of violent crime rates and notice that ice cream sales are increasing at the same rate as crime. I erroneously conclude that eating ice cream causes violent crime. What may be impacting my results is a/an: O Effect modifier A confounder Hawthome effect O Ecological fallacy Question 2 Committing a type-1 error means.. O concluding that your null (negative) result is actually true O concluding that your positive result is actually false O your results are blased you did not recruit enough people to be in your study