A Test Was Made Of $H _ { 0 } : \mu _ { 1 } = \mu _ { 2 }$

Multiple Choice

A test was made of $H _ { 0 } : \mu _ { 1 } = \mu _ { 2 }$ versus $H _ { 1 } : \mu _ { 1 } < \mu _ { 2 }$ . The sample means were $\bar { x } _ { 1 } = 12$ and $\bar { x } _ { 2 } = 6$ , the sample standard deviations were $s _ { 1 } = 5$ and $s _ { 2 } = 4$ , and the sample sizes were $n _ { 1 } = 11$ and $n _ { 2 } = 19$ . Compute the value of the test statistic.

A) 5.132
B) 0.937
C) 7.357
D) 3.4