17.4 Show the following results:

a. Show that 2n(b n

1 - b1) ¡d N(0, a2), where a2 is a constant, implies that b n

1 is consistent. (Hint: Use Slutsky’s theorem.)

b. Show that su 2 >su 2

¡ p 1 implies that su>su ¡ p 1.