Samples Were Drawn from Three Populations $n _ { 1 } = 8 , n _ { 2 } = 6$

Multiple Choice

Samples were drawn from three populations. The sample sizes were $n _ { 1 } = 8 , n _ { 2 } = 6$ and $n _ { 3 } = 6$ The sample means were $\bar { x } _ { 1 } = 1.92 , \bar { x } _ { 2 } = 1.34 , \text { and } \bar { x } _ { 3 } = 1.76$ The sample standard deviations were $s _ { 1 } = 0.26 , s _ { 2 } = 0.36 , \text { and } s _ { 3 } = 0.45$ The grand mean is $\overline { \bar { x } } = 1.698 .$
Compute the mean squares MSTr.

A) 0.5932
B) 4.7259
C) 2.1337
D) 1.1863