The metal “skin” of an airplane is inspected carefully at the time of assembly a
ID: 2931771 • Letter: T
Question
The metal “skin” of an airplane is inspected carefully at the time of assembly and any flaws that are found are corrected. Suppose the average number of flaws found in these inspections is 0.10 per square foot. Assume all the Poisson conditions are met. Use the Poisson probability function to determine the probability of finding
The metal “skin” of an airplane is inspected carefully at the time of assembly and any flaws that are found are corrected. Suppose the average number of flaws found in these inspections is 0.10 per square foot. Assume all the Poisson conditions are met. Use the Poisson probability function to determine the probability of finding
A.) no flaws in a 20 square foot area. (Round answer to 4 decimal places, e.g. 15.7521.)Explanation / Answer
a)
mean = 0.10 per square feet
hence for 20 square foot
mean = 0.10 *20 = 2
P(X = 0 ) = e^(-2)
= 0.13533
= 0.1353
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