SD (Standard Deviation)

This is an "Orphan" page. Its core content has not been shared: what you see below is a loose collection of pages and page snippets that mention this page, as well as snippets of this page that were quoted elsewhere.

Serum LDL-cholesterol concentrations are measured in blood samples collected from 25 healthy volunteers. The data follow a normal distribution. The mean and SD (Standard Deviation) for this group are 130 mg/dL and 25 mg/dL, respectively. The standard error of the mean is 5.0. With a 95% confidence level, the true mean for the population from which this sample was drawn falls within which of the following ranges (in mg/dL)?