Remember that we already learned about the standard error .... The standard error of the sample mean is given by the following equation: $$\sigma_\bar{y} = \frac{\sigma}{\sqrt{n}} $$. In the above equation, $\sigma$ is the population standard deviation. But like $\mu$, $\sigma$ is an unknown parameter.
Alicia Keys and White Stripes singer Jack White are to record the theme for new James Bond film Quantum of Solace. Jack White and Alicia Keys will collaborate on the new James Bond film theme Photo: JOHN TAYLOR/PA. By Anita Singh, Showbusiness Editor. 11:24AM BST 30 Jul 2008.
Peter Cetera sang The Glory of Love from Karate Kid 2. Peter Cetera is only one of the lead singers of Chicago. Robert Lamm sang some of their greatest hits including Color My World, Make Me Smile, and Saturday in the Park. . The guy from Chicago who died is Terry Kath, who played the wah wah guitar on 25 or 6 to 4 Terry Kath passed from an accidental gunshot wound inflicted while cleaning his gun after hunting and having a few beers.