Confidence intervals for the population proportion

Understand confidence intervals for a population proportion in Queensland Year 12 Mathematical Methods. From a sample proportion, a confidence interval reports a range around it that is likely to contain the true proportion.

You will learn to build 90%, 95% and 99% intervals, find the margin of error and interval width, see how sample size and confidence level affect them, and size a sample for a target accuracy — core statistics for the QCAA exam.