AP Statistics - edventure-GA

A random variable X has a chi-square distribution with n degrees of freedom if it is a gamma random variable with parameters m = n/2 and ( = 2, i.e X ~ ((n/2,2). Therefore, its probability density function (pdf) has the form (1) f(t) = f(t; n) = In this case we shall say X is a chi-square random variable with n degrees of freedom and write X ... ................
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