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a local manufacturer produced a study in which they randomly selected 100 people from the community and asked if they preferred ice cream or yogurt. 24 responded that they preferred yogurt and 56 responded
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a local manufacturer produced a study in which they randomly selected 100 people from the community and asked if they preferred ice cream or yogurt. 24 responded that they preferred yogurt and 56 responded that they preferred ice cream. what is wrong with this poll?

User Aurelien Souchet
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Adding 56 and 24, one can see that only 80 people responded. Since not all of the random sampling answered, that causes an error. 
User Deseosuho
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