New management in a high-rise building is working on the maintenance budget. They know fire alarm...
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New management in a high-rise building is working on the maintenance budget. They know fire alarm batteries last on average 615 days with a standard deviation of 30 days. 1. What is the probability of selecting two apartments where batteries lasted less than 600 days in both? 2. At least how many days will a battery last in an apartment that is in the first 10% that need replacement? New management in a high-rise building is working on the maintenance budget. They know fire alarm batteries last on average 615 days with a standard deviation of 30 days. 1. What is the probability of selecting two apartments where batteries lasted less than 600 days in both? 2. At least how many days will a battery last in an apartment that is in the first 10% that need replacement?
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Related Book For
Introduction to Probability
ISBN: 978-0716771098
1st edition
Authors: Mark Daniel Ward, Ellen Gundlach
Posted Date:
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