The Sampling Distribution of the Ratio of Two Sample Variances $S _ { 1 } ^ { 2 }$

The sampling distribution of the ratio of two sample variances $S _ { 1 } ^ { 2 }$ / $S _ { 2 } ^ { 2 }$ is said to be F-distributed provided that:

A) the samples are independent.
B) the populations are normal with equal variances.
C) the samples are dependent and their sizes are large.
D) the samples are independently drawn from two normal populations.

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