Question: 1. Answer Exercise when
Exercise: The density function of a continuous random variable X is given by
(a) Find k.
(b) Find E(X) and V(X).
2. Suppose that you replace every observation x by y = 3x + 7 and the mean µ by η = 3µ + 7. What happens to the t-value you use?
3. and power of a test. What is the relationship between type I error and the confidence coefficient in a confidence interval?