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.
Sexual Healing is a song recorded by American singer Marvin Gaye from his album Midnight Love. It was his first single since his exit from his long-term record label Motown earlier in the year, following the release of the In Our Lifetime album the previous year. People described it as America's hottest pop-culture turn-on since Olivia Newton-John suggested she wanted to get 'Physical'. It is listed at number 233 on the Rolling Stone list of its 500 Greatest Songs of All Time.