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In this video I teach you how to calculate the confidence interval to estimate the population proportion. To solve the exercise, we will have to calculate the critical value z from the Normal table. The statement of the exercise is as follows: A survey is conducted among 100 university students, of which 65 have passed all the subjects. Calculate a 95% confidence interval for the proportion, assuming that the population follows a normal distribution. More videos on CONFIDENCE INTERVALS Exercise on confidence intervals for the mean with UNKNOWN population DEVIATION (STUDENT's t table): • Confidence interval for MEAN with... Exercise on confidence intervals for the mean with KNOWN population DEVIATION (NORMAL table): • CONFIDENCE INTERVAL for the MEAN ... Follow me on my Instagram account @omegaformacion so that you can stay informed about my videos and you can suggest exercises that you want me to explain. And don't forget to subscribe to my channel and hit the bell so you can see all my videos!! Instagram: /omegaformacion #confidenceintervals #proportion #normaldistribution confidence intervals for the population mean with known deviation confidence intervals for the population mean with unknown deviation Confidence intervals for the proportion normal distribution student t distribution statistical inference math and statistics exercises