In the past, schools in Los Angeles County have closed an average of 3 days each year

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In the past, schools in Los Angeles County have closed an average of 3 days each year for weather emergencies. What is the probability that schools in Los Angeles County will close for 4 days next year?

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Statistical Techniques in Business and Economics

ISBN: 978-1259666360

17th edition

Authors: Douglas A. Lind, William G Marchal

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