2 (ness, Let X, Xx X. Portal with unknown a P(X - x) - where u > 0. Suppose n is large is assumed. (a) (2 pis) What is the approximate distribution of A7 Find its mean and variance [ Note: State the result heing used | Use the following frequency Lable to answer question (b), (c) and (d) 012 3 4 5 Frequency 1 4 8 10 8 7 (b) (3 pu) Using the table above, calculate your observed value of I and use it to construct a 95 Large-sample confidence interval for p. [Hint: Note, here n =