Mathematics, 17.10.2019 18:30 gungamer720
The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard deviation of 600 hours.
(a) what is the probability that a laser fails before 5000 hours?
(b) what is the life in hours that 95% of the lasers exceed?
(c) if three lasers are used in a product and they are assumed to fail independently, what is the probability that all three are still operating after 7000 hours?
Answers: 3
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Graham’s monthly bank statement showed the following deposits and withdrawals. -$25.20, $42.75, -$22.04, -$18.50, $74.11. part a if grahams baldness in the account was $37.86 at the beginning of the month,! 27/4! 2// the account balance at the end of the month? ? plz i will give you 100 points
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The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 ho...
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