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 releases new song 'Pulse'. More Videos ... MUST WATCH. (CNN)I am human, I am love and my heart beats with my blood/Love will always win, underneath the skin, everybody's got a pulse, artist Melissa Etheridge sings in her tribute to the 49 people who died in the Orlando nightclub shooting.