.737 Let 1". , Y2, . . . , Y; be a random sample of size 5 from a normal population with mean t] and variance 1 and let ? = {11.55} ELI H. Let Y5 be another independent observation from the same population. What is the distribution of 7.38 Suppose that Y1, Y2. ..., Ys, Yo, Y, W, and U are as defined in Exercise 7.37. What is the distribution of a V5Y6/VW? Why? b 2Y6/ VU? Why? c 2 (5 Y + Y?) /U? Why