STATS 250 Lecture Notes - Lecture 9: Statistical Hypothesis Testing, Type I And Type Ii Errors, Statistical Parameter
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STATS 250 Full Course Notes
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In chapter 10 we examined statistical methods for estimating the population proportion based on the sample proportion using a confidence interval estimate. There will be a direction of extreme that is indicated by the alternative hypothesis. Suppose that a researcher speculates that artists are more likely to be left handed than are other people in the general population. H0: p 0. 10 (not more likely) let _p_ = popul propn of all artists that are left-handed. Suppose that a pharmaceutical company wants to be able to claim that for its newest medication the proportion of patients who experience side effects is less than 20%. H0: p 0. 20 let _ p _ = popul propn of all subjects taking new medic. A random sample of 500 households will be taken to assess if the population proportion has changed from the. Direction: two sided let _ p _ = popul propn of all households today parameter = written description that have no children.
