Suppose that a random group of 300 young people were surveyed for their preferred president candidate if they were to vote. 60 people selected Hilary...

Suppose that a random group of 300 young people were surveyed for their preferred president candidate if they were to vote. 60 people selected Hilary Clinton, and 51 people selected Donald Trump. Based on the finding, if we want to find a clear winner at the alpha=0.05 ? = 0.05 level, a sample size of ____ is recommended.