Sunita's Job Is to Provide Technical Support to Computer Users

Multiple Choice

Sunita's job is to provide technical support to computer users.Suppose the arrival of calls can be modeled by a Poisson distribution with a mean of 4.9 calls per hour.What's the probability that in the next 30 minutes there will be 2 or more calls?

A) 0.7886
B) 0.2590
C) 0.0894
D) 0.7023
E) 0.9561