Chapter 5, Problem 11RWYL

Telephone Marketing A mortgage company advertises its rates by making unsolicited telephone calls to random numbers. About 2 of the calls reach consumers who are interested in the companys services. A telephone consultant can make 100 calls per evening shift. a What is the probability that two or more calls will reach an interested party in one shift? b How many calls does a consultant need to make to ensure at least a 0.5 probability of reaching one or more interested parties? Hint: Use trial and error.