TABLE 12-6 According to an Article in Marketing News,fewer Checks Are Being

Multiple Choice

TABLE 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 Table 12-6,what is the form of the alternative hypothesis?

A) H₁ : π₁ ≠ π₂ ≠ π₃
B) H₁ : π₁ ≠ π₂ = π₃
C) H₁ : π₁ = π₂ ≠ π₃
D) H₁ : not all π_j are the same