A Customer Service Firm Receives an Average of Three Calls

question 77

Multiple Choice

A customer service firm receives an average of three calls per hour on its toll-free number. For any given hour,find the probability that it will receive at least three calls. Use the Poisson distribution.

• A) 0.5768
• B) 0.1891
• C) 0.4232
• D) 0.6138