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8. A survey was done of hours worked per day by a college student. The following results were found: Number of hours Number of students

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8. A survey was done of hours worked per day by a college student. The following results were found: Number of hours Number of students 0 100 60 2 120 3 30 20 5 15 4 a. Calculate the probability that a student worked 3 hours b. Calculate the probability that a student worked more than 3 hours c. Calculate the probability that a student worked less than 2 hours

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