THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 107

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A supermarket chain has 25 stores in the North,30 in the South,50 in the Midwest,and 35 in the West.Using a proportional allocation of a random sample of 30% of the outlets,the manager records the following means and standard deviations.

-Estimate the population mean.

• A)134.38
• B)158.31
• C)142.69
• D)165.44

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