The number of imperfections in the weave of a certain textile has a Poisson distribution with a mean of four per square yard. (a) Find the probability that a 1-square-yard sample will contain at least one imperfection.

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The number of imperfections in the weave of a certain textile has a Poisson distribution with a mean of four
per square yard.
(a) Find the probability that a l-square-yard sample will contain at least one imperfection.
Transcribed Image Text:The number of imperfections in the weave of a certain textile has a Poisson distribution with a mean of four per square yard. (a) Find the probability that a l-square-yard sample will contain at least one imperfection.
(b) Find the probability that a 3-square-yard sample will contain exactly
imperfection.
one
Transcribed Image Text:(b) Find the probability that a 3-square-yard sample will contain exactly imperfection. one
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