Concept explainers
Insurance companies are interested In knowing the population percent of drivers who always buckle up before riding In a car.
a. When designing a study to determine this population proportion, what Is the minimum number you would need to survey to be 95% confident that the population proportion Is estimated to within 0.03?
b. If It were later determined that it was important to be more than 95% confident and a new survey was commissioned, how would that affect the minimum number you would need to survey? Why?
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- Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell