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.
-A bank holds 750 delinquent mortgages in residential properties.It requires an estimate of the mean current appraised value of these properties.Initially,a random sample of 25 was appraised,and a sample standard deviation of $38,400 was found.If the bank requires a 90% confidence interval for the population mean extending $5,000 on each side of the sample mean,how many more properties must be appraised?

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.
-A bank holds 750 delinquent mortgages in residential properties.It requires an estimate of the mean current appraised value of these properties.Initially,a random sample of 25 was appraised,and a sample standard deviation of $38,400 was found.If the bank requires a 90% confidence interval for the population mean extending $5,000 on each side of the sample mean,how many more properties must be appraised?

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.
-A bank holds 750 delinquent mortgages in residential properties.It requires an estimate of the mean current appraised value of these properties.Initially,a random sample of 25 was appraised,and a sample standard deviation of $38,400 was found.If the bank requires a 90% confidence interval for the population mean extending $5,000 on each side of the sample mean,how many more properties must be appraised?