Hi! I have a sample (of 30) who’s outcome was measured binomially as either YES/NO. The expected population should have entirely NO answers. I therefore want to calculate if there is a significant difference in the proportions between sample of 23/30 (23-YES, 7-NO) and the expected proportion of 0/30 (0-YES, 30-NO). Is using a z-score calculator and finding the p-value a correct method even when one proportion is 0%? Can this method also be used if the different sample populations were compared with each other (ie 23/30 compared with 15/30)? Thank you!