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Find the sample size needed to estimate the percentage of Virginia residents who are left-handed. Use...

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Statistics

Find the sample size needed to estimate the percentage ofVirginia residents who are left-handed. Use a Margin of Error of 3%and use a confidence level of 90% for both situations asfollows.

a. Assume phat is unknown

b. Based on prior studies, use phat= 12%

Answer & Explanation Solved by verified expert
3.7 Ratings (730 Votes)
Solution Given that 05 assume 051 1 05 05margin of error E 3 003At 90    See Answer
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