JMP 14.2 Online Documentation (English)
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Design of Experiments Guide
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JMP 13.2 Online Documentation
Design of Experiments Guide
•
Prospective Sample Size and Power
• Two Sample Proportions Calculator
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Two Sample Proportions Calculator
Use the Two Sample Proportions calculator to evaluate sample size for a hypothesis test about two proportions. Sample size and power are associated with the following hypothesis test:
versus the two-sided alternative:
or versus either of the following one-sided alternatives:
where
p
1
and
p
2
are the population proportions from two populations, and
D
0
is the hypothesized difference in proportions.
The Two Proportions Calculator also provides the actual test size. This is the actual Type I error rate for the specified assumptions. Since the binomial distribution is discrete, the actual test size can differ significantly from the stated Alpha level for small samples or proportions near 0 or 1.
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Help created on 3/19/2020