Samples Were Drawn from Three Populations $n _ { 1 } = 9 , n _ { 2 } = 6$

question 3

Multiple Choice

Samples were drawn from three populations. The sample sizes were $n _ { 1 } = 9 , n _ { 2 } = 6$ , and $n _ { 3 } = 6$ . The sample means were $\bar { x } _ { 1 } = 1.57 , \bar { x } _ { 2 } = 1.64$ , and $\bar { x } _ { 3 } = 1.36$ . The sample standard deviations were $s _ { 1 } = 0.42 , s _ { 2 } = 0.29$ , and $s _ { 3 } = 0.40$ . The grand mean is $\bar { x } = 1.53$ . Compute the sum of squares SSTr.

• A) 2.6317
• B) 0.2604
• C) 0.1302
• D) 0.8905

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