Question: 48. Finding Sample Size Aresearcher plans to conduct a hypothesis test using the alternative hypothesis of H1: p , 0.4, and she plans to use

48. Finding Sample Size Aresearcher plans to conduct a hypothesis test using the alternative hypothesis of H1: p , 0.4, and she plans to use a significance level of a 5 0.05.

Find the sample size required to achieve at least 80% power in detecting a reduction in p from 0.4 to 0.3. (This is a very difficult exercise. Hint: See Exercise 47.)

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