Its more of a religious reason... Hinduism believes that the soul and body are separate ... While some other religions believe that the soul and body are doubles ... if the body is hurt, the soul is hurt ...
DEFINITION of 'Confidence Interval'. A term used in inferential statistics that measures the probability that a population parameter will fall between two set values. The confidence interval can take any number of probabilities, with the most common being 95% or 99%. Next Up.
When you compute a confidence interval on the mean, you compute the mean of a sample in order to estimate the mean of the population. Clearly, if you already knew the population mean, there would be no need for a confidence interval.