Q.

A manufacturing concern employing a large number of workers over a period of time and the average absentee rate is 2 workers per shift then probability that exactly two workers will be absent is

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a

1e2

b

2e2

c

4e2

d

2e2

answer is B.

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Detailed Solution

λ = 2 P(X=2)=e−λλ22!                       =e−2222!=2e2
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A manufacturing concern employing a large number of workers over a period of time and the average absentee rate is 2 workers per shift then probability that exactly two workers will be absent is