how to determine what confidence interval is used in a confidence interval what is csi mean what is the available method to obtain a confidence interval about the common mean what is the available method to get a confidence interval about the common mean what is the test for unequal variances but equal means what is the available method to get a confidence interval about the common mean? what are the available methods to get a confidence interval what is the available methods to get a confidence interval about the common mean why is a confidence interval useful for predicting the range of sigma and unequal variance? which of the following is used to find the confidence interval of a variable? which statement is true about a confidence interval? which is true about the confidence interval for the common mean which condition is true when the common mean of the sample is an equal or unequal variance? which of the following describes the confidence interval about the common mean for a standard deviation of the sample? what is the standard deviation of an equal variance what is the available method to get a confidence interval about the common mean $mu$ what is the available method to get a confidence interval about the common mean? what is the available methods when are univariate values considered equal how to find confidence intervals