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The following is the number of minutes to commute from home to work for a group...

The following is the number of minutes to commute from home to work for a group of 25 automobile executives. 35 34 39 46 44 41 38 31 32 47 30 35 33 40 39 31 40 48 38 38 46 40 43 35 36 How many classes would you recommend? What class interval would you suggest? (Round up your answer to the next whole number.)

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