Question: 04 How large of a sample size do I need to be 98 percent confident that my marsin of error is no more then 2.0

04 How large of a sample size do I need to be 98 percent confident that my marsin of error is no more then 2.0 points when my known sisma Value =19 ? LOC=.98LOR=0.02ShOR=0.01Zscore=2.33Sigma=19MOE=2 ANSWER: Optimal sample size, n,=[Z(alpha/2)sigma/MoE]2. n=[1.64310/1.2]2=[16.45/1.2]2=[13.71]2=187.96

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