Mathematics, 26.05.2021 07:00 hemriccaleb5340
PLEASE HELP!!
The batteries from a certain manufacturer have a mean lifetime of 860 hours, with a standard deviation of 70 hours. Assuming that the lifetimes are normally
distributed, complete the following statements.
(a) Approximately of the batteries have lifetimes between 790 hours and
930 hours.
Example
(b) Approximately 95% of the batteries have lifetimes between hours and
hours.
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PLEASE HELP!!
The batteries from a certain manufacturer have a mean lifetime of 860 hours, with a s...
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