An Advertising Executive Receives an Average of 10 Telephone Calls

Short Answer

An advertising executive receives an average of 10 telephone calls each afternoon between 2 and 4 pm.The calls occur randomly and independently of one another.
A)Find the probability that the executive will receive 12 calls between 2 and 4 pm on a particular afternoon.
B)Find the probability that the executive will receive eight calls between 2 and 3 pm on a particular afternoon.
C)Find the probability that the executive will receive at least six calls between 2 and 4 pm on a particular afternoon.