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

Multiple Choice

A test was made of $H _ { 0 } : \mu _ { 1 } = \mu _ { 2 } \text { versus } H _ { 1 } : \mu _ { 1 } < \mu _ { 2 }$ The sample means $\bar { x } _ { 1 } = 7$ and $\bar { x } _ { 2 } = 13$ the sample standard deviations were $s _ { 1 } = 7 \text { and } s _ { 2 } = 5$ and the sample sizes
were $n _ { 1 } = 18 \text { and } n _ { 2 } = 16$
Compute the value of the test statistic.

A) -0.697
B) -4.067
C) -7.164
D) -2.899