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Question 1 2.1 out of 2.1 points Please answer this question based on the following data. The numbers of hours worked (per week )by 400

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Question 1 2.1 out of 2.1 points Please answer this question based on the following data. The numbers of hours worked (per week )by 400 statistics students are shown below . Number of hours Frequency 0 - 9 20 10 - 19 80 20 - 29 200 30 - 39 100 The cumulative frequency for the class of 20 -29 Question 2

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