Find the power for each of the following scenarios:

(a) one-sided alternative hypothesis, significance level = 0.10, population standard deviation = 6, the difference from the null hypothesis (0 1) is 4 units, and a sample size of 25.

(b) two-sided alternative hypothesis, significance level = 0.10, population standard deviation = 10, the difference from the null hypothesis (0 1) is 5 units, and a sample size of 49.