Difference between revisions of "EBook Problems Limits Norm2Poisson"
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Revision as of 21:56, 7 February 2009
Contents
EBook Problems Set - Normal Approximation to Poisson
Problem 1
The manufacturing of printer cartridges produces 2% defective cartridges. Assume the cartridges are independent and that a lot contains 1000 cartridges. Approximate the probability that more than 25 cartridges are defective.
- Choose one answer.
- (a) 0.129
- (b) 0.241
- (c) 0.232
- (d) 0.699
Answer
Problem 2
After an investigation by the FDA, it is known that 5% of chickens at a local supermarket have salmonella. If 100 chickens are sampled randomly, without replacement, approximate the probability that at least 1 of the chickens have salmonella.
- Choose one answer.
- (a) 0.423
- (b) 0.966
- (c) 0.129
- (d) 0.684
Answer
Problem 3
After firing 1000 boxes of ammo, a certain handgun jamed according to a Poisson distribution with a mean of 0.4 per box of ammo. Approximate the probability that more than 350 boxes of ammo contain ammo that jammed.
- Choose one answer.
- (a) .0032
- (b) .0012
- (c) .0231
- (d) .0089
Answer
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