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Power and Sample Size Determination
Sample size calculation Example Consider a population with proportion p. Let X be the number of successes in a random sample of size 100 with model X ˘Binomial(100;p). Consider the hypotheses H 0: p = 0:3 versus H A: p <0:3. The researchers decide to reject the null hypothesis if X 22. 1 Find 2 Find if p = 0:2.
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