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24 Cards in this Set
- Front
- Back
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Type 1 error
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error of rejecting Ho when it's true
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Probability of type 1 error is determined by
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alpha
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Type 2 error
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excepting Ho as true when it is false
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Type 2 error determined by
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Beta
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Power
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thinking Ho is false when it is false
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Power is determined by
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1-beta
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The probability of thinking Ho is true when it is true is determined by
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1-alpha
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As N increaes
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t value increases because denominator will decrease
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as s^2 decreases...
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denominator will decrease so will the t value
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The hypothesis that the experiment was designed to investigate
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research hypothesis
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hypothesis with no difference or no relationship
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null hypothesis
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hypothesis that is adopted when Ho is rejected
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alternative hypothesis
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the distribution of a statistic over repeated sampling from a specific population
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sampling distribution
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the standard deviation of a sampling distribution
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standard error
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the distribution of sample means over repeated sampling from one population
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sampling distribution of the mean
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Central Limit Theorm
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sigma^2/n
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if population is normal
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sample distribution of mean will be normal
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if population is symmetric but not normal
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sampling distribution of mean will be nearly normal
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if population is skewed
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sizes of 30 or more are required before the means approximate a normal distribution
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the larger the numerator...
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the larger the t value
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a= .05 two-tailed
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plus or minus 1.96
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a= .05 one tailed
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plus or minus 1.645
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a=.01 two tailed
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plus or minus 2.58
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a= .01 one tailed
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plus or minus 2.33
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