Chapter 7.2, Problem 7LM

a.

To determine

Find the critical value $\left(z_{\frac{\alpha }{2}}\right)$ that corresponds to the given right tail area $\alpha =0.1$.

b.

To determine

Find the critical value $\left(z_{\frac{\alpha }{2}}\right)$ that corresponds to the given right tail area $\alpha =0.01$.

c.

To determine

Find the critical value $\left(z_{\frac{\alpha }{2}}\right)$ that corresponds to the given right tail area $\alpha =0.05$.

d.

To determine

Find the critical value $\left(z_{\frac{\alpha }{2}}\right)$ that corresponds to the given right tail area $\alpha =0.2$.