The Statistic ( N - 1)s ² \ S ²

question 16

Multiple Choice

The statistic ( n - 1) s ² \ s 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 s ².
• C)the population is normally distributed with variance equal to s ².
• D)All of these choices are true.

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