Estimate the probability that a 1 
sheet of aluminum has exactly one flaw, and find the uncertainty in this estimate.
What will be an ideal response?
Let X be the number of flaws in a one-square-meter sheet of aluminum. Let 
be the mean number of flaws per square meter. Then square meter. Then 
.
Let p be the probability that a one-square-meter sheet of aluminum has exactly one flaw.
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