Recently,a department store chain was interested in determining if there was a difference in the mean number of customers who enter the three stores in Seattle.The analysts set up a study in which the number of people entering the stores was counted depending on whether the day of the week was Saturday,Sunday,or a weekday.The following data were collected: Given this format,what is the null hypothesis for testing whether blocking is effective?
A) :
=
=
B) :
=
=
C) Not all means are equal.
D) :
=
=
Correct Answer:
Verified
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