Stats Exam #3: Confidence Intervals and Hypothesis Testing
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7 Terms
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Z-stat
Population standard deviation is known
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T-stat
Only the sample standard deviation is known
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Type 1 error
When you reject the null hypothesis but the null hypothesis was correct
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Type 2 error
When you fail to reject the null hypothesis but the null hypothesis was false
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X bar
Average for a particular sample
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X
Average for the whole population
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Error bound
UL- sample mean
Note 
Flashcards (36)