One-Tail Two-Tail
Hypothesis that Average is greater than some test value or Average is less than some test value, but not both
Value to compare the sample percentage to
Value measured from sample or expected from sample
Size of sample or desired number of respondents
Size of Sample 2 or desired number of respondents
(Probability of incorrectly rejecting the null hypothesis that there is no difference in the percentage values). An Alpha of 5% corresponds to a 95% Confidence Interval.

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