Confidence Interval Question

Question

Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 116 with 73 successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places.

Answer 1

1-PropZInt(x: 73, n: 116, C-Level: 0.80)

≈ {0.572, 0.687}

0.572 ≤ p ≤ 0.687