THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The mean household income,in dollars,must be estimated for a town that is divided into three districts.The relevant information is shown in the table.

A 95% confidence interval for the population mean that extends $550 on each side of the sample estimate is required.
-Determine how many sample observations are needed under the optimal allocation scheme.

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The mean household income,in dollars,must be estimated for a town that is divided into three districts.The relevant information is shown in the table.
  
A 95% confidence interval for the population mean that extends $550 on each side of the sample estimate is required.
-Determine how many sample observations are needed under the optimal allocation scheme.

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The mean household income,in dollars,must be estimated for a town that is divided into three districts.The relevant information is shown in the table.
  
A 95% confidence interval for the population mean that extends $550 on each side of the sample estimate is required.
-Determine how many sample observations are needed under the optimal allocation scheme.