In testing the hypotheses: $H _ { 0 } : \mu =$ 500 $H _ { 1 } : \mu \neq$ 500, if the value of the Z test statistic equals 2.03, then the p-value is:
A) 0.0424.
B) 0.4788.
C) 0.9576.
D) 0.0212.

Question

Quizplus · Accepted Answer

Since this is a two-sided test, we need to find the area in both tails of the standard normal distribution that corresponds to the Z-score of 2.03. Using a standard normal table or calculator, we find that the area in each tail is 0.0212. Therefore, the p-value is 0.0212 + 0.0212 = 0.0424. Hence, the answer is A.

In Testing the Hypotheses H0:μ=H _ { 0 } : \mu =H0​:μ=

In Testing the Hypotheses $H _ { 0 } : \mu =$