Recently the State Education Department of New Jersey wanted to determine the competence in math of the
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Recently the State Education Department of New Jersey wanted to determine the competence in math of the state’s fourth-grade students. Assume that 20 % of the students are actually incompetent in mathematics. A test was given to 120 fourth-grade students in New Jersey. What is the probability that at least 20 % of the students who took the test failed it?
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Related Book For 
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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