Respuesta :
Answer:
Option B) Reject null hypothesis
Step-by-step explanation:
We are given the following in the question:
We are given the null hypothesis:
[tex]H_0 = 4,000[/tex]
[tex]\alpha = 0.01[/tex]
[tex]z_{stat} = 6.00[/tex]
Two tailed z-test
Now, [tex]z_{critical} \text{ at 0.01 level of significance } = \pm 2.58[/tex]
Since,
The calculated z-statistic does not lie in the acceptance region, we fail to accept and reject the null hypothesis.
Left-tailed z-test
Now, [tex]z_{critical} \text{ at 0.01 level of significance } = -2.58[/tex]
Since,
[tex]z_{stat} > z_{critical}[/tex]
We fail to accept and reject the null hypothesis.
Right-tailed z-test
Now, [tex]z_{critical} \text{ at 0.01 level of significance } = 2.58[/tex]
Since,
[tex]z_{stat} > z_{critical}[/tex]
We fail to accept and reject the null hypothesis.
