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**bohn14** An advertising executive receives an average of 10 telephone calls each afternoon between 2 and 4 P.M. The calls occur randomly and independently of one another.

a.) Find the probability that the executive will receive 13 calls between 2 and 4 P.M. on a particular afternoon (solve by hand).

b.) Find the probabily that the executive will receive seven calls between 2 and 3 P.M. on a particular afternoon (solve by hand).

My questions are whether or not this is example of a sampling distribution? And if it is, whats the first step to solving this problem?