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The number of emergency cases in a health center is distributed Poisson with rate 3.5 per...

The number of emergency cases in a health center is distributed Poisson with rate 3.5 per an hour, if you know that in a given hour three cases have occured, then the probability that exactly four cases will occur in this hour is:

a.

0.588

d.

0.653

b.

0.278

e.

0.352

c.

0.407
Math   Statistics-And-Probability   
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