The number of Americans who visit fast-food restaurants regularly has grown steadily over the last 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 400 fast-food customers aged 16 and older was selected, and their favorite 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.
Compute
:
______________
What is the p-value?
______________
Conclude that there ______________ a dependence between age group and favorite fast food restaurant.
Write a short paragraph presenting your statistical conclusions and their practical implications for marketing experts.
________________________________________________________
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