[See Solution] The life of a particular type of dry-cell battery is normally distributed with a mean of 600 days and a standard deviation of 60 days. What
Question: The life of a particular type of dry-cell battery is normally distributed with a mean of 600 days and a standard deviation of 60 days.
- What fraction of these batteries would be expected to survive beyond 680 days?
- What fraction would be expected to fail before 550 days?
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