(Answered) Show worksuppose we know that 80 percent of the

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Suppose we know that 80 percent of the population believes in free trade. Assume a random sample of 400 individuals is taken.

1. What is the value of the standard deviation of the sample proportion?

2. What is the probability that more than 77% of those sampled believe in free trade?

3. What is the probability that more than 83% of those sampled believe in free trade?

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