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

question 23

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.
$$\begin{array}{l}\text { \quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad Year }\\\begin{array} { c | c | c | c } \hline \text { Check Written } & \text { Year 1 } & \text { Year 2}& \text { Year 3 } \\\hline \text { Yes } & 225 & 175 & 125 \\\text { No } & 275 & 325 & 375\end{array}\end{array}$$
-Referring to Table 12-13, what is the value of the test statistic?

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Definitions:

Sales Taxes

Levies imposed by governments on the sale of goods and services, contributing to public revenue.

Constant-rate

A process or condition that occurs at a steady, unchanging rate over time.

Regressive

Regressive, in economic terms, often refers to a tax system where the tax rate decreases as the taxable amount increases, imposing a greater burden on lower-income individuals.

Marginal Tax Rate

The percentage of an increase in income that is taxed away.