Difference between revisions of "Stat202:Test of Significance Concepts Crib Sheet"
From Sean_Carver
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Null hypothesis: | Null hypothesis: | ||
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Alternative hypothesis: | Alternative hypothesis: | ||
Revision as of 18:10, 13 April 2017
One Sample Z-Test
Hypotheses:
- About the population mean of a single quantitative variable.
Null hypothesis:
- Population mean has a specific value <math> \mu_0 <\math>
Alternative hypothesis:
- Pick one: the population mean is [(1) not equal to, (2) greater than, or (3) less than] the specific value.
Judgment from:
- A sample from the population.
- You can do the test if you only the sample mean and the sample size. But in all cases you need to assume you know the standard deviation of the population. The alternative to knowing the population standard deviation is to use the sample standard deviation, but that requires a different test.
