The Statistic (N - 1)s² $\sigma$ ² Has a Chi-Squared Distribution with N - 1 Degrees

question 83

Multiple Choice

The statistic (n - 1) s² / $\sigma$ ² has a chi-squared distribution with n - 1 degrees of freedom if:

• A) the sample has a Student t-distribution with degrees of freedom equal to n - 1.
• B) the sample is normally distributed with variance equal to s².
• C) the population is normally distributed with variance equal to \(\sigma\)².
• D) All of these choices are true.

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