Please answer this question clearly. Thank you

The campaign manager for a political candidate claims that 55% of registered voters favor the candidate over her strongest opponent. Assuming that this claim is true, what is the probability that in a simple random sample of 300 voters, at least 60% would favor the candidate over her strongest opponent?

• a) What is the point estimate of the population?
• 2.2 For this situation suppose that only 49% of the registered voters in the sample favor the candidate over her strongest opponent. Given this result:
• a. If the campaign managers claim is correct, what is the probability that the sample proportion would be no more than 0.49 for a sample of this size
• b. Based on your answer to part (a), speculate on which type of error is made by the campaign managers claim?