SCENARIO 12-6
According to an Article in Marketing News,fewer Checks $\pi$

Multiple Choice

SCENARIO 12-6
According to an article in Marketing News,fewer checks are being written at the grocery store checkout 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.

-Referring to Scenario 12-6,what is the form of the alternative hypothesis?

A) H₁ : $\pi$ ₁ $\neq$ $\pi$ ₂ $\neq$ $\pi$ ₃
B) H₁ : $\pi$ ₁ $\neq$ $\pi$ ₂ = $\pi$ ₃
C) H₁ : $\pi$ ₁ = $\pi$ ₂ $\neq$ $\pi$ ₃
D) H₁ : not all $\pi$ _j are the same