Conditions for valid confidence intervalsConditions for confidence intervals worked examplesReference: Conditions for inference on a proportionCritical value (z*) for a given confidence levelExample constructing and interpreting a confidence interval for pInterpreting a z interval for a proportionDetermining sample size based on confidence and margin of error
Introduction to t statisticsSimulation showing value of t statisticConditions for valid t intervalsReference: Conditions for inference on a meanExample finding critical t valueExample constructing a t interval for a meanConfidence interval for a mean with paired dataMaking a t interval for paired dataInterpreting a confidence interval for a meanSample size for a given margin of error for a mean
Confidence intervals give us a range of plausible values for some unknown population parameter based on results from a sample. This unit covers confidence intervals for means and proportions using data from one sample.
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