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

question 9

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 critical range for the Marascuilo procedure to test for the difference in proportions between year 2 and year 3 using a 0.05 level of significance?

Understand the guidelines for interpreting and analyzing graphics.

Comprehend the principles of graphic design and their application.

Select appropriate visuals for presenting specific data sets.

Explain the structure and utility of organizational charts.