Chapter 4

Exercises: 4.11, 4.13, 4.14, 4.15, 4.21, 4.26, 4.27, 4.28

Also: Suppose $X_1, X_2, \ldots, X_n$ is an iid random sample from exponential distribution with parameter $\lambda$. Find the sampling distribution of $\bar{X}$. Hint: First find the distribution of $\displaystyle{\frac{X_1}{n}}$.