Joint Probabilities
Let Z be a standard normal random variable and let V have a chisquare distribution with ndegrees of freedom. Assume that Z and V are independent and let
T = Z / √ (V/n)
Find the density of T (The distribution of T is known as the tdistribution with n degrees of freedom.)
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Please refer to the attachment.
A statistical distribution published by William Gosset in 1908. His employer, Guinness Breweries, required him to publish under a pseudonym, so he chose "Student." Given n independent measurements , let
(1)
where is the population mean, is the sample mean, and s is the estimator for population standard deviation (i.e., s=SQRT(V)) defined by (2)
Student's tdistribution is defined as the distribution of the random variable t which is (very loosely) the "best" ...
Solution Summary
Let Z be a standard normal random variable and let V have a chisquare distribution with ndegrees of freedom. Assume that Z and V are independent and let
Find the density of T (The distribution of T is known as the tdistribution with n degrees of freedom.)
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