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 and Jack White to Sing Quantum of Solace Theme Song. The news does not come as a shock to Bond fans, as Universal Exports first reported the possibility of Alicia Keys singing the Quantum of Solace theme song back on July 11, 2008.
Melissa Etheridge. Melissa Lou Etheridge (born May 29, 1961) is an American singer-songwriter, guitarist, and activist. Her self-titled debut album Melissa Etheridge was released in 1988 and became an underground success. The album peaked at No. 22 on the Billboard 200, and its lead single, Bring Me Some Water, garnered Etheridge her first Grammy Award nomination for Best Rock Vocal Performance, Female.