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.
$SCENARIO 12-6 According to an article in Marketing News,fewer checks are being written at the grocery store checkout than in the past.To determine whether there is a difference in the proportion of shoppers who pay by check among three consecutive years at a 0.05 level of significance,the results of a survey of 500 shoppers in three consecutive years are obtained and presented below. -Referring to Scenario 12-6,what is the form of the alternative hypothesis? A)H1 : \pi 1 \neq \pi 2 \neq \pi 3 B)H1 : \pi 1 \neq \pi 2 = \pi 3 C)H1 : \pi 1 = \pi 2 \neq \pi 3 D)H1 : not all \pi j are the same$
-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

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