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Summary Test 1 Inferential statistics UT Premaster Business Administration
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Inferential statisticsWeek 1
Confidence interval for a proportion
On the basis of a single sample, when can we say something about the whole population = inferential
statistics
,
,
, 68% of the samples will show a percentage between 1 s.e. to the left and 1 to the right
95% will show a percentage between 1.96x s.e. to the right and 1.96x s.e. to the right
Empirical rule is 68-95-99,7
Mostly we do not know the but just the p. we can estimate the s.e. by putting p in the formula
instead of , like this
, alt
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