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Confidence Interval
Formulas
Significance Tests
100
"We are (100-α)% confident that the true mean (in context) is between (lower bound) and (upper bound).
What is the sentence for confidence interval?
100
estimate ± margin of error
What is a confidence interval?
100
n as in the formula.
What is sample size?
200
The probabily that the interval will contain the parameter value in different samples.
What is the confidence level?
200
_ ( X -µ)/(σ /√n)
What is a significance test?
200
___ X
What is the sample mean?
300
The standard deviation of the population.
What is sigma?
300
Z* σ/√n
What is margin of error?
300
μ≠ __ or μ> __ or μ< __ are all ...
What is the alternate hypothesis?
400
Using a confidence interval is appropriate when these are met.
What are conditions?
400
σ / √n
What is standard deviation of mean?
400
μ=0
What is the null hypothesis?
500
σ__ X
What is standard deviation of mean?
500
1 - β
What is power?
500
If p-value is smaller than alpha level.
What is statistically significant?