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Probability and Confidence Intervals

Basic StatisticsProbability and Confidence IntervalsProbability and Confidence IntervalsLearning IntentionsToday we will understand: Interpreting the meaning of a Confidence interval Calculating the Confidence interval for the mean with large and small samples An important role of statistics is to use information gathered from a sample to make statements about the population from which it was chosen Using samples as an estimate of the population How good of an estimate is that sample providing us with?

So far we have discussed confidence intervals for the mean where n ≥ 30 When is known, we are assuming the population is normally distributed and so we can follow the procedure for large sample sizes When is unknown (more often the case!) we make adjustments Confidence Intervals for the Mean with Small Samples

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