The Essential Difference Between a Confidence Interval Constructed Employing a Stratified

question 86

Multiple Choice

The essential difference between a confidence interval constructed employing a stratified sample and that constructed employing a simple random sample is that with the stratified sample

• A)a point estimate of the population mean is not required.
• B)determination of the estimate of the mean and standard error of estimate involves the use of weights.
• C)the strata results are appropriately weighted by a method of curvilinear estimation.
• D)inferences are drawn on the basis of the known population mean and variance.
• E)the researcher does not need to specify the degree of confidence.