Essay
THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A corporation has 30 outlets in the North,40 in the South,60 in the Midwest,and 45 in the West.Using a proportional allocation of a random sample of 20% of the outlets,the manager records the following means and standard deviations.
-Find a 95% confidence interval for the total sales.
Correct Answer:

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N
st ± zα/2 N
st = 2562...View Answer
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Correct Answer:
Verified
st ± zα/2 N
View Answer
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