A manufacturer of phone batteries determines that the average length in talk time for one its batteries
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Question:
A manufacturer of phone batteries determines that the average length in talk time for one its batteries is 470 minutes. Suppose that the standard deviation is known to be 32 minutes and that the data are bell -shaped. Estimate what battery lengths correspond to a z-score of -1 and 1.
Related Book For
Cornerstones of Cost Management
ISBN: 978-1285751788
3rd edition
Authors: Don R. Hansen, Maryanne M. Mowen
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