if you could help me understand the process with these few example problems.

Suppose the true proportion of voters in the county who support a specific candidate is 0.5. Consider the sampling distribution for the proportion of supporters with sample size n = 103. What is the mean of this distribution? What is the standard deviation of this distribution?Suppose that the efficacy of a certain drug is 0.52. Consider the sampling distribution (sample size n = 219) for the proportion of patients cured by this drug. What is the mean of this distribution? What is the standard deviation of this distribution?Suppose the true proportion of voters in the county who support a school levy is 0.58. Consider the sampling distribution for the proportion of supporters with sample size n = 123. What is the mean of this distribution? What is the standard error (i.e. the standard deviation) of this sampling distribution, rounded to three decimal places