STA220H5 Lecture Notes - Lecture 8: Statistical Hypothesis Testing, F-Distribution, Test Statistic
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Confidence intervals: for the mean : when f is known, for the mean : when f is not known, for the proportion p. A point estimator is a formula to calculate a single number from a sample. An interval estimator is a formula that tells us how to use a sample to calculate an interval that estimates a parameter. The confidence coefficient is the probability that an interval encloses the population parameter. The confidence level is the confidence coefficient expressed as a percentage. Test and confidence interval for and and the chi-2 square distribution p-values. The theory of a hypothesis test (type i and type ii errors) Steps in hypothesis testing: state ho, the null hypothesis, using the appropriate parameter, state ha, the alternative hypothesis. Use the same parameter and express this with an inequality: before seeing your sample choose an alpha level. This is the level of significance for the test.
