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QUESTION 19 Exhibit 2-2 The numbers of hours worked {per week} by 400- statistics students are shown below. Number of hours Frequency 0 9 20

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QUESTION 19 Exhibit 2-2 The numbers of hours worked {per week} by 400- statistics students are shown below. Number of hours Frequency 0 9 20 10 19 80 2O - 29 200 30 39 100 Refer to Exhibit 2-2. The cumulative frequency for the class 0120 - 29 Q is 200 O is 300 0 is 0.?5 0 is 0.5

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