pls help me with this problem

Problem 8: 10 points = [5 + 5] A poll conducted among n = 600 TV viewers has shown that X = 219 of them remain indifferent to sports events. 1. At the significance level, a = 0.05, is there enough evidence that the population proportion of those viewers differs from p = 0.4? 2. At the significance level, a = 0.05, is there enough evidence to conclude that the population propor- tion of indifferent viewers is below p=0.4? Show critical value (or values) and state the rejection rule in each case! Solution