SOLUTION: 70% of the employees in a specialized department of a large software firm are computer science graduates. A project team is made up of 9 employees. Part a) What is the probabili

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Question 1146761: 70% of the employees in a specialized department of a large software firm are computer science graduates. A project team is made up of 9 employees.
Part a) What is the probability to 3 decimal digits that all the project team members are computer science graduates?
Part b) What is the probability to 3 decimal digits that exactly 3 of the project team members are computer science graduates?
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
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(a)  P = 0.7%5E9 = 0.040  (approximately; rounded as requested).



(b)  P = C%5B9%5D%5E3%2A0.7%5E3%2A%281-0.7%29%5E6 = %28%289%2A8%2A7%29%2F%281%2A2%2A3%29%29%2A0.7%5E3%2A0.3%5E6 = 0.021 (approximately; rounded as requested).