Instruction 15-7
According to an Article in Marketing News, Fewer

question 41

Short Answer

Instruction 15-7
According to an article in Marketing News, fewer cheques 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 cheque 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.
$$\begin{array} { | l | c | c | c | } \hline \text { Cheque Written } & \text { Year 1 } & \text { Year 2 } & \text { Year 3 } \\\hline \text { Yes } & 225 & 175 & 125 \\\hline \text { No } & 275 & 175 & 125 \\\hline\end{array}$$
-Referring to Instruction 15-7,what is the value of the test statistic?

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Definitions:

Displacement

The distance and direction of an object's movement from its starting point.

Cam Displacement Diagram

Cam Displacement Diagram illustrates the movement (displacement) profile of a cam follower over one complete cycle, facilitating the design and analysis of cam mechanisms.

Cam

A mechanical component that transforms rotational motion into linear motion, or vice versa, often used in engines and various machines to drive or control motion.

Radial Cam

A cam in which the follower moves radially relative to the cam center, translating rotational motion into linear motion.