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.
I was one of thousands who went to see Quantum of Solace on Friday night and sat in a packed theater with everyone else who had paid $10.75 to get their 007 fix. Yes, seeing Daniel Craig on the big screen was worth every penny, but I couldn't help but think back to a time when movie tickets weren't so expensive.