When Testing $H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0$

Multiple Choice

When testing $H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0$ vs. $H _ { 1 } : \mu _ { 1 } - \mu _ { 2 } \neq 0$ , the observed value of the z-score was found to be -2.15. Then, the p-value for this test would be

A) .0158
B) .0316
C) .9842
D) .9684