TABLE 12-13
According to an Article in Marketing News, Fewer

question 3

Short Answer

TABLE 12-13
According to an article in Marketing News, fewer checks are being written at grocery store checkout stands than in the past. To determine whether there is a difference in the proportion of shoppers who pay by check among three consecutive years at a 0.05 level of significance, the results of a survey of 500 shoppers in three consecutive years are obtained and presented below.
$$\begin{array}{l}\text {\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad Year }\\\begin{array} { c | c | c | c } \text { Check Written } & \text { Year 1 } & \text { Year 2} & \text {Year 3 } \\ \hline \text { Yes } & 225 & 175 & 125 \\\text { No } & 275 & 325 & 375\end{array}\end{array}$$
-Referring to Table 12-13, what is the p-value of the test statistic?

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Definitions:

Optimistic Decision Maker

A decision-making style characterized by the tendency to expect the most favorable outcome.

Maximax Criterion

A decision-making rule used in scenarios of uncertainty, selecting the option with the maximum possible payoff regardless of the risks involved.

Uncertainty

A situation where the outcomes or conditions of an event, effect, or decision are not known or predictable.

Conditional Probability

This is the probability of an event occurring given that another event has already occurred.