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.
Snatam Kaur. Original Light Tour. Snatam Kaur is an American singer, peace activist and author raised in the Sikh and Kundalini Yoga tradition. She has an amazing ability to transform traditional Sikh chants of India into a contemporary sound that appeals to the modern ear and awakens an ancient yearning in the soul.