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Stats WW 4

Across
Calculated by sqrt(p(1-p)/n)
A multiplier that makes the confidence interval wide enough to have the stated confidence level
takes numerical values that describe the outcomes of some chance process
Hypothesis that is selected if you reject the null
How confident
Abbreviated ME
This incorporates hypotheses
All possible outcomes and their probabilities of a random variable
Hypothesis that is selected if you fail to reject the null
An interval of plausible values for a parameter
This condition allows us to approximate normally as long as n>30
Possible conclusion of a significance test
A statistic that has low variability.
Down
the distribution of values taken by the statistic in all possible samples of the same size from the same population
A statistic that is unbiased
if the mean of its sampling distribution is equal to the value of the parameter estimated
Possible conclusion of a significance test
Abbreviated df
Abbreviated SE
Non-directional test, not =
Directional test, > or <
spread
An assumption within a significance test
Examples: X-bar, mu