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.
Both, however, continued recording, albeit as solo artists: Garfunkel composing and recording Private World for Octavia Records, and - under the name Artie Garr - Beat Love for Warwick; Simon recorded with The Mystics, and Tico & The Triumphs, and wrote and recorded under the names Jerry Landis and Paul Kane.