The probability of a manufacturing defect in an aluminum beverage can is .00007. If 100,500 cans are produced, find the following probabilities. 
(a) 
At least six defective cans. (Round your answer to 4 decimal places.) 
Probability 
(b) 
At least seven defective cans. (Round your answer to 4 decimal places.) 
Probability 
(c)  Is the Poisson approximation justified?  

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