A fan cost index is calculated for each of the professional, Ask an Expert

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A fan cost index is calculated for each of the professional sports to give an idea of what it costs a family to go to a game. A football fan wanted to know what it would cost a typical family to go to an NFL game. She sampled 20 teams from 2012 NFL season and found the average fan cost index to be $440 with a standard deviation of $83. a. What is our population mean? What is our best estimate?

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