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Recently,a Department Store Chain Was Interested in Determining If There

Question 57

Multiple Choice

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: 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) H<sub>0</sub> : μ<sub>A</sub> = μ<sub>B</sub> = μ<sub>C</sub> B) H<sub>0</sub> : μ<sub>Sat</sub> = μ<sub>Sun</sub> = μ<sub>Week</sub> C) Not all means are equal. D) H<sub>0</sub> : σ<sub>1</sub> = σ<sub>2</sub> = σ<sub>3</sub> Given this format,what is the null hypothesis for testing whether blocking is effective?


A) H0 : μA = μB = μC
B) H0 : μSat = μSun = μWeek
C) Not all means are equal.
D) H0 : σ1 = σ2 = σ3

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