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

Question

Quizplus · Accepted Answer

The p-value for a two-tailed test with a z-score of -2.15 is 0.0316, as it considers both tails of the normal distribution.

When Testing H0:μ1−μ2=0H _ { 0 } : \mu _ { 1 } - \mu _ { 2 } = 0H0​:μ1​−μ2​=0

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