A manufacturer of cell phone batteries wants to estimate the useful life of its battery (in thousands
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A manufacturer of cell phone batteries wants to estimate the useful life of its battery (in thousands of hours). The estimate is to be within 0.10 (100 hours). Assume a 95% level of confidence and that the standard deviation of the useful life of the battery is 0.90 (900 hours). Determine the required sample size.
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Related Book For 
Statistical Techniques in Business and Economics
ISBN: 978-1259666360
17th edition
Authors: Douglas A. Lind, William G Marchal
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