What is the power to detect a shift to 108?

A quality engineer tests $H_0: \mu = 100$ against $H_1: \mu > 100$ with a known $\sigma = 15$, a sample of $n = 25$, at the one-sided 5% level. Suppose the process has actually shifted to a true mean of $\mu = 108$.

Find the power of the test (the probability it correctly rejects $H_0$) and the Type II error rate $\beta$.