This question relates to the patterns that occur when trying to draw inferences about one or two population means or population proportions. It is assumed in this question that any condence intervals or tests will be completed using a tdistribution or the standard normal distribuon. In a condence interval estimate for a population mean or proportion, or comparing two means or two proporor'rs, the margin of error for the condence interval will be: the product of a critical value and the standard deviation of the population represented by the relevant parameter the sample statistic that is used to estimate the relevant parameter a critical value from a standard distribution the product ofa critical value and the standard deviation of the sampling distribution of the relevant parameter OOOO