Given $n _ { 1 } = 18 , n _ { 2 } = 27 , \mathrm {~S} = 398 , \text { and } H _ { 1 } : m _ { 1 } < m _ { 2 }$

Multiple Choice

Given $n _ { 1 } = 18 , n _ { 2 } = 27 , \mathrm {~S} = 398 , \text { and } H _ { 1 } : m _ { 1 } < m _ { 2 }$ compute $\sigma _ { S }$

A) 43.16
B) 414
C) 56
D) -0.37