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.
Quantum of Solace is based on an idea by co-producer Michael G. Wilson, stepson of the late Albert R. Broccoli (producer of the previous James Bond movies) and half brother to current producer Barbara Broccoli. The story was adapted for the movie by screenwriters Neil Purvis, Robert Wade, and Paul Haggis.