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.

-For a sample of 126 observations from a population of 873,the sample mean is 17.2 and the sample standard deviation is 2.4.Create a 99% confidence interval for the population mean.

Question

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.
 
-For a sample of 126 observations from a population of 873,the sample mean is 17.2 and the sample standard deviation is 2.4.Create a 99% confidence interval for the population mean.

Quizplus · Accepted Answer

The Answer of 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.
 
-For a sample of 126 observations from a population of 873,the sample mean is 17.2 and the sample standard deviation is 2.4.Create a 99% confidence interval for the population mean.