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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Question 58

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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.
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. -Find a 95% confidence interval for the population mean. A) 142.69 ± 5.22 B) 142.69 ± 1.96 C) 142.69 ± 2.66 D) 142.69 ± 4.58
-Find a 95% confidence interval for the population mean.


A) 142.69 ± 5.22
B) 142.69 ± 1.96
C) 142.69 ± 2.66
D) 142.69 ± 4.58

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