double check my logic...

mathNewbie

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Feb 10, 2012
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hey y'all! would you mind checkin my logic on this one? i think i've found the solution but im new to this.

a computer chip makes an error once in 9 billion computes. what is the probability that computing 1 billion times will result in no errors?

my method:
probability of error = 1 / 9000000000 = 1.1111x10-10
probability of no error = 1 0 probability of error = 1 - 1.11111x10-10 = 0.9999999998

probability of no error in 1 billion = (probability of no error)1000000000 = 0.89484

question two: probability of at least one error in 1 billion computes
prob >=1 error in 1 billion computes = 1 - prob no error in 1 billion computes = 1 - 0.89484 = 0.10516

does this logic seem right? thanks!
 
hey y'all! would you mind checkin my logic on this one? i think i've found the solution but im new to this.

a computer chip makes an error once in 9 billion computes. what is the probability that computing 1 billion times will result in no errors?

my method:
probability of error = 1 / 9000000000 = 1.1111x10-10
probability of no error = 1 0 probability of error = 1 - 1.11111x10-10 = 0.9999999998

probability of no error in 1 billion = (probability of no error)1000000000 = 0.89484

question two: probability of at least one error in 1 billion computes
prob >=1 error in 1 billion computes = 1 - prob no error in 1 billion computes = 1 - 0.89484 = 0.10516

does this logic seem right? thanks!

Looks good to me....
 
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