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Data collected by emergency responders in a large city suggest that on average there are 6.3 drug overdoses per night. (a) Wh
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Answer #1

Mean/Expected number of events of interest: λ =                6.3

P ( X =    3   ) = e^-6.3*6.3^3/3!=   0.077

...

B)

X P(X)
0 0.0018
1 0.0116
2 0.0364
3 0.0765

P(X <=3) = P(0)+P(1)+ P(2)+ P(3)

=0.126

................

Please let me know in case of any doubt.

Thanks in advance!


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