The Marketing Manager of a Pizza Chain Is in the Process

question 20

Essay

The marketing manager of a pizza chain is in the process of examining some of the demographic characteristics of her customers. In particular, she would like to investigate the belief that the ages of the customers of pizza parlours, hamburger emporiums and fast-food chicken restaurants are different. As an experiment, the ages of eight customers of each of the restaurants are recorded and listed below. From previous analysis we know that the ages are not normally distributed. $\begin{array} { | c | c | c | } \hline & { \text { Custoner Age } } \\\hline \text { Pizza } & \text { Hamburger } & \text { Chicken } \\\hline 23 & 26 & 25 \\\hline 19 & 20 & 28 \\\hline 25 & 18 & 36 \\\hline 17 & 35 & 23 \\\hline 36 & 33 & 39 \\\hline 25 & 25 & 27 \\\hline 28 & 19 & 38 \\\hline 31 & 17 & 31 \\\hline\end{array}$ Do these data provide enough evidence at the 10% significance level to infer that there are differences in age among the customers of the three restaurants?

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Definitions:

Pitched Ball

In sports, refers to the act of throwing a ball towards a player, especially in baseball, using various techniques to challenge the batter.

Socially Cooperative

Behaviors or actions that involve working together towards common goals within a group or society.

Aggressive Outbursts

Explosive, often violent, expressions of anger or frustration that can result in physical or emotional harm to others or oneself.

Altruistic

Refers to a selfless concern for the well-being of others without expecting anything in return.