Question

In each of Exercises 9.41-9.46 ,determine the critical values for a one-mean z-test. For each exercise, draw a graph that illustrates your answer

A left - tailed test with$\alpha =0.01$

Short answer

A left - tailed test with $\alpha =0.01$.

In the left tail test that $\alpha =0.01$, from normal local tables values are significant${\mathrm{z}}_0=-2.33$.

Step-by-step solution

Step 1. Given 

A left - tailed test with$\alpha =0.01$

Step 2. Graph 

A left - tailed test with $\alpha =0.01$.

In the left tail test that $\alpha =0.01$, from normal local tables values are significant${\mathrm{z}}_0=-2.33$.