ICCI
Hypothesis
P-value
Z Test for Proportion
Misc.
100

Everything that is included in I (identify) part of the ICCI 4 step process.

What are Choose, Check, Calculate, Conclude?

100
the claim that we weigh evidence against in a statistical test
What is null hypothesis?
100
we fail to reject the null hypothesis
What is high p-value?
100
Testing a proportion of individuals against the expected true proportion value
What is z test for proportions?
100
If we fail to reject the null hypothesis when the null hypothesis is actually false, Probability of committing Type II error is ß
What is power?
200

The conditions that need to be satisfied in order to preform a z test for proportions

What is random, independent, normal

200
the claim we are trying to find evidence of
What is the alternative hypothesis?
200
we fail to reject the null hypothesis
What is a low p value?
200
z=p̂-p (sqrt (p(1-p)n))
What is the formula for z test for proportions?
200
measures distance of the sample statistic from the expected parameter if the null hypothesis was true
What is a test statistic?
300
The general formula to find a test statistic.
What is (statistic-parameter)/Standard Deviation?
300
either equal to, less than, or greater than (=, <, >)
What is one-sided?
300
p-value of .003
What is fail to reject the null hypothesis?
300
Conditions for a z test for proportions.
What is random, independent, and normal?
300
gives a range of possible values that could represent the true population proportion value, p
What is a confidence interval?
400
Included in the last I (interpret) of ICCI
What is interpret the p value in context of the problem, and state if there is convincing evidence against the null hypothesis?
400
not equal to (≠)
What is a two sided hypothesis?
400
A p-value of .07
What is reject the null hypothesis?
400
If we reject the null hypothesis when the null hypothesis is actually true, Probability of committing Type I error is α
What is type I error?
400
Most common value for alpha.
What is .05?
500
The formula to decide whether or not a proportion fulfills the normal condition in a significance test.
What is np > 10 and n(1-p) > 10
500

it is used to determine whether an alternative hypothesis (the proportion or mean you are testing) is statistically significant against the null hypothesis (or what you expect to be the true value)

What is a significance test?

500
Probability, computed assuming the null hypothesis is true, that the statistic would take a value as extreme as or more extreme than the one actually observed, in the direction specified by the alternative hypothesis
What is the p-value?
500
If we fail to reject the null hypothesis when the null hypothesis is actually false, Probability of committing Type II error is ß
What is type II error?
500
there is convincing evidence to reject the null hypothesis (p<
What is reject the null hypothesis?
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