The Answer to Probability Questions.
1. A certain airplane has 2 independent alternators to
provide electrical power. The probability that a given alternator will fail on
a 1 hour flight is 0.02 . Please show work so that I can understand for future
problems.
Probability: a) both will fail?
b) neither will fail?
c) one or the other will fail?
2. Probability is 1 in 4,000,000 that a single auto trip
will result in a fatality. over a lifetime an average driver takes 50,000
trips.
a) What is probability of fatal accident over a lifetime?
(independent events)
b) Why might the assumption of independence be violated?
c) Why might a driver be tempted Not to use a seat belt
“just for this trip?
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