Mean and Standard Deviation of Sample Proportion

Question

In a binomial experiment with $$n = 150$$ and probability $$p = 0.3$$, what are the approximate mean and standard deviation of the sample proportion?

Accepted Answer

Mean = 0.3, Standard Deviation ≈ 0.0374

Answer

Mean = 0.3, Standard Deviation ≈ 0.045

Answer

Mean = 45, Standard Deviation ≈ 6.5

Answer

Mean = 0.21, Standard Deviation ≈ 0.0374