Probability Models from Observed Frequencies 7.SP.C.7.B Grade Practice Test Questions TOC | Lumos Learning

Probability Models from Observed Frequencies 7.SP.C.7.B Question & Answer Key Resources Lumos StepUp - PARCC Online Practice and Assessments - Grade 7 Mathematics

Lumos StepUp - PARCC Online Practice and Assessments - Grade 7 Mathematics Probability Models from Observed Frequencies

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Susan is selling cookies for a fundraiser. Out of the last 20 people she asked, 10 people bought 1 box of cookies, 5 bought more than 1 box, and 5 bought none. Based on this data, what is the probability that the next person she asks will buy at least 1 box of cookies?