License: CC0. Confidence interval calculator: Confidence Interval Calculator This web calculator allows users to specify the desired number of observations, sample mean, standard deviation and ...

Calculate your T-Value by taking the difference between the mean and population mean and dividing it over the standard deviation divided by the degrees of freedom square root.

Specifically, a sample taken from this type of population usually consists of a very large number of zero values, plus a small number of nonzero values that follow some continuous distribution. In ...