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In a completely unrelated foodborne illness outbreak in Kansas, a questionnaire was
administered to 100 randomly selected individuals that had dined at a cafeteria hall, some of
whom had gotten ill while some were not sick. Based on this questionnaire, calculate the attack
rates for items that were ingested by these individuals ( 8 point). 1. Which food item(s) seems to
be the cause of the e-coli outbreak? ( 2 points) 2. If there are 2 food options that seem to be the
potential culprits, what do you do (analytically) to narrow down which food is contaminated? ( 2
points)

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