SOLUTION: A real estate agent has 18 properties that she shows. She feels that there is a 40% chance of selling any one property during a week. The chance of selling any one property is inde

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Question 1132460: A real estate agent has 18 properties that she shows. She feels that there is a 40% chance of selling any one property during a week. The chance of selling any one property is independent of selling another property. Compute the probability of selling less than 2 properties in one week. (Answer must be written as a simplified fraction or rounded to four decimal places)
Answer by ikleyn(52903) About Me  (Show Source):
You can put this solution on YOUR website!
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P(selling less than 2) = P(selling no one) + P(selling exactly 1) = 


                       = %281-0.4%29%5E18          +  C%5B18%5D%5E1%2A%281-0.4%29%5E17%2A0.4%5E1 = 0.6%5E18 + 18%2A0.6%5E17%2A0.4 = 

                       = 0.000102          + 0.001219           = 0.001321 = 0.1321%.     ANSWER