Chapter 8.3, Problem 117E

a.

To determine

Determine the critical value $\left(t_{\alpha }\right)$.

Draw the graph that represents the critical value $\left(t_{\alpha }\right)$.

b.

To determine

Determine the critical value $\left(t_{\alpha }\right)$.

Draw the graph that represents the critical value $\left(t_{\alpha }\right)$.

c.

To determine

Determine the critical value $\left(t_{\alpha }\right)$.

Draw the graph that represents the critical value $\left(t_{\alpha }\right)$.

d.

To determine

Determine the critical value $\left(t_{\frac{\alpha }{2}}\right)$.

Draw the graph that represents the critical value $\left(t_{\frac{\alpha }{2}}\right)$.