Instruction 15-12
According to an Article in Marketing News,fewer Cheques

Multiple Choice

Instruction 15-12
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 15-12,what is the form of the alternative hypothesis?

A) H₁: ?₁ ? ?₂ = ?₃
B) H₁: ?₁ = ?₂ ? ?₃
C) H₁: ?₁ ? ?₂ ? ?₃
D) H₁: not all ?_j are the same