Chapter 11.2, Problem 26E

a.

To determine

Find the F statistic for testing $H_{0G}:{\sigma }_G^2=0$ versus $H_{aG}:{\sigma }_G^2>0$

b.

To determine

Find the F statistic for testing $H_{0A}:{\sigma }_A^2=0$ versus $H_{aA}:{\sigma }_A^2>0$

Find the F statistic for testing $H_{0B}:{\sigma }_B^2=0$ versus $H_{aB}:{\sigma }_B^2>0$