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POSSIBLE POINTS: Pierced ears-- Students in Mrs. Alexas’ math classes wanted to find out how common it is for people to have their ears pierced. In an observational
study, they recorded data on two variables-gender and whether or not the student had a pierced ear- for all 200 people in Mrs. Alexa’s math classes
that year. 51% of the students were male, 58% of the students were pierced and 11% were both male and pierced. Suppose we randomly select one
student

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