Question: An industrial sales manager, testing the effectiveness of three different sales presentations, randomly selected a presentation to be used when making the next sales call

An industrial sales manager, testing the effectiveness of three different sales presentations, randomly selected a presentation to be used when making the next sales call on 14 customers. The numbers of units purchased as a result of each sales call are shown here. Use the 0.05 level in determining whether the three sales presentations could be equally effective. (Use data file XR12089.)

Presentation 13 10 14 15 12 10 13 13 14

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