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.
Including Quantum of Solace, Craig has made three movies so far in which he plays James Bond: Casino Royale (2006), Quantum of Solace (2008), and Skyfall (2012). Spectre is set for release in 2015, and Bond 25 is on the books with no known release date. Craig is scheduled to play Bond in both of these movies.