A survey in Southern California claims that, among consumers, the grocery store chains of Ralph's, Lucky's, and Von's are equally preferable. To check this claim, a random sample of 150 consumers was selected and the following data recorded:
Test the appropriate hypotheses at the 5% significance level.
Compute
:
______________
Reject
when
> ______________.
Conclude that the three grocery store chains ______________ equally preferred.
Correct Answer:
Verified
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