14.58 Favourite Fast Foods The number of Canadians who visit fast-food restaurants regularly has grown steadily over the past decade. For this reason, marketing experts are interested in the demographics of fast-food customers. Is a customer's preference for a fast-food chain affected by the age of the customer? If so, advertising might need to target a particular age group. Suppose a random sample of 500 fast-food customers aged 16 and older was selected, and their favourite fast-food restaurants along with their age groups were recorded, as shown in the table:

Use an appropriate method to determine whether or not a customer's fast-food preference is dependent on age. Write a short paragraph presenting your statistical conclusions and their practical implications for mar- keting experts.

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Age Group McDonald's Burger King Wendy's Other 16-21 75 34 21-30 89 42 30-49 54 50+ 21 25 3223 52 1827 10 6 19 10 18 10