MATLAB: An Introduction with Applications
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Author: Amos Gilat
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A manufacturer of phone batteries determines that the average length of talk time for one of its batteries is 470 minutes. Suppose that the standard deviation is known to be 32 minutes and that the data are approximately bell-shaped.
- Estimate the percentage of batteries whose talk time is between 406 minutes and 534 minutes.
- Estimate the percentage of batteries whose talk time is less than 438 minutes.
- Estimate the percentage of batteries whose talk time is more than 534 minutes.
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