A procedure that uses a modification of this distribution has one of its key parameters given by the Welch-Satterthwaite equation.
A procedure that uses a modification of this distribution has one of its key parameters given by the Welch-Satterthwaite equation. This distribution is a special case of the generalized hyperbolic distribution in which the psi parameter has been set to zero and the lambda parameter is less than zero. This distribution's associated density is proportional to the gamma function of "v plus one" divided by "two," where v is this distribution's degrees of freedom. This distribution relies on using a statistic often represented with the letter s, which is used because the related "zed" statistic is invalid. This distribution is used to estimate the mean of a normally-distributed population when the standard deviation is not known. For 10 points, name this distribution developed by Guinness Brewery employee William Gosset and published under the pseudonym "Student."
A procedure that uses a modification of this distribution has one of its key parameters given by the Welch-Satterthwaite equation.
Student's t-distribution [accept Welch's t-distribution before the word "density" is read]