A process that polishes a mirrored surface leaves an average of 2 small flaws per 5 m
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A process that polishes a mirrored surface leaves an average of 2 small flaws per 5 m2 of surface. The number of flaws on an area of surface follows a Poisson distribution.
a. What is the probability that a surface with area 3 m × 5 m will contain more than 5 flaws?
b. What is the probability that a surface with area 2 m × 3 m will contain no flaws?
c. What is the probability that 50 surfaces, each with dimensions 3 m × 6 m, will contain more than 350 flaws in total?
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a The mean concentration of flaws is 04 per m 2 so the mean number of flaws in a ...View the full answer
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