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The First Industrial Revolution
NoteStudied by 78 peopleChapter 8: Basic Concepts of Chemical Bonding
NoteStudied by 59 peopleChapter 26: Art of the Americas
NoteStudied by 17 peopleChapter 23: Consumer Rights and Responsibilities
NoteStudied by 27 peopleThe Communications Revolution
NoteStudied by 6 peopleChapter 15- DNA and the Gene: Synthesis and Repair
NoteStudied by 19 peopleT-statistic
- allows researchers to use sample data to test hypothesis with an unknown population mean, unlike the z test
- standard error of mean: distance between sample and population mean
- sample data can now estimate the distribution
- as the sample size increases, the t-distribution approaches the z-distribution
- with small df, the t distribution is smaller and more spread out
- critical values increase
- on t-table, always look at the two-tailed column T hypothesis tests
- state the hypothesis and select a value for a
- locate the critical region
- the sample must be independent observation
- no relationship between observations or the sample
- the underlying population from which the sample is drawn must be normal
- the sample must be independent observation
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Explore Top NotesNoteStudied by 78 peopleNoteStudied by 59 peopleNoteStudied by 17 peopleNoteStudied by 27 peopleNoteStudied by 6 peopleNoteStudied by 19 people
The First Industrial Revolution
NoteStudied by 78 peopleChapter 8: Basic Concepts of Chemical Bonding
NoteStudied by 59 peopleChapter 26: Art of the Americas
NoteStudied by 17 peopleChapter 23: Consumer Rights and Responsibilities
NoteStudied by 27 peopleThe Communications Revolution
NoteStudied by 6 peopleChapter 15- DNA and the Gene: Synthesis and Repair
NoteStudied by 19 people