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

question 50

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.
$$\begin{array}{l}\text {\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad Year }\\\begin{array} { c | c | c | c } \hline\text { Check Written } & \text { Year 1 } & \text { Year 2 }&\text{Year 3 } \\\hline \text { Yes } & 225 & 175 & 125 \\\text { No } & 275 & 325 & 375\end{array}\end{array}$$
-Referring to Table 12-13, what is the expected number of shoppers who do not pay by check in year 3 if there is no difference in the proportion of shoppers who pay by check among the three years?

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Definitions:

Exposure

A technique in therapy that involves confronting feared or avoided situations, objects, or thoughts directly to reduce their power.

Response Prevention

A therapeutic strategy in treating certain behavioral disorders that involves preventing the individual from performing a habitual response to reduce the behavior's frequency.

Virtual Reality

A computer-generated simulation of a three-dimensional environment that can be interacted with in a seemingly real or physical way by a person using special electronic equipment, such as a helmet with a screen inside or gloves fitted with sensors.

Flooding

A psychological treatment method for phobias and anxiety disorders that involves exposing the patient to their fear object or context without any danger, to help them overcome their anxiety.