Value to compare the sample average to
Value measured from sample or expected from sample
Probability of incorrectly rejecting the null hypothesis that there is no difference in the average values. An Alpha of 5% to a 95% Confidence Interval.
Probability of incorrectly failing to reject the null hypothesis that there is NO difference in the average values — assuming no when a real difference exists. A Beta of 50% is used in most simple calculations of sampling error.

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