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

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 null hypothesis?

A) H₀: π₁ = π₂ = π₃
B) H₀: π₁ = π₂ ≠ π₃
C) H₀: π₁ ≠ π₂ = π₃
D) H₀: π₁ ≠ π₂ ≠ π₃