8. Sampling Distributions & Confidence Intervals: Proportion

8. Sampling Distributions & Confidence Intervals: Proportion / Sampling Distribution of Sample Proportion / Problem 4

Problem 4

What is the formula for the standard deviation of the sampling distribution of the sample proportion?

σ_p̂ = sqrt(pq/n)

σ_p̂ = sqrt(npq)

σ_p̂ = p + q/n

σ_p̂ = pq/n