Which of the Following Has an F Distribution?
A) $\frac { ( n - 1 ) s } { \sigma }$

Multiple Choice

Which of the following has an F distribution?

A) $\frac { ( n - 1 ) s } { \sigma }$
B) $\frac { s _ { 1 } } { s _ { 2 } }$
C) $\frac { ( n - 1 ) s _ { 1 } } { s _ { 2 } }$
D) $\frac { s _ { 1 } ^ { 2 } } { s _ { 2 } ^ { 2 } } n$