A recent debate about where in the United States skiers believe the skiing is best prompted the following survey. We are interested in testing to see if the best ski area is independent of the level of the skier. Use the data below to answer the questions. U. S. Ski Area Beginner Intermediate Advanced Tahoe 20 30 40 Utah 10 30 60 Colorado 10 40 50 a. What is the total number of skiers in Tahoe?

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