A new phone answering system installed by the Ohio Power Company ...

[genevieve1028]

A new phone answering system installed by the Ohio Power Company is capable of handling five calls every 10 minutes.
 
  Prior to installing the new system, company analysts determined that the incoming calls to the system are Poisson distributed with a mean equal to two every 10 minutes. If this incoming call distribution is what the analysts think it is, what is the probability that in a 10-minute period more calls will arrive than the system can handle?A) 0.174
  B) 0.0812
  C) 0.0166
  D) 0.0233

Question 2

A corporation has 11 manufacturing plants. Of these, 7 are domestic and 4 are located outside the United States. Each year a performance evaluation is conducted for 4 randomly selected plants.
 
  What is the probability that a performance evaluation will include exactly 1 plant outside the United States?A) 0.4242
  B) 0.3776
  C) 0.3523
  D) 0.4696

[paavo]

Answer to Question 1

C

Answer to Question 2

A

[genevieve1028]

Correct answers!

[paavo]

Great! Please up vote