A random sample is drawn from a normal distribution with mean μ and variance σ².The random variable (n − 1)S² / σ² has a chi-squared probability distribution with n degrees of freedom.

Name: A random sample is drawn from a normal distribution with mean μ and variance σ 2 .The random variable (n − 1)S 2 / σ 2 has a chi-squared probability distribution with n degrees of freedom.
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Question

Quizplus · Accepted Answer

The correct distribution has (n - 1) degrees of freedom, not n.

A Random Sample Is Drawn from a Normal Distribution with Mean