Probability question: A mail-order department store has 5 telephone lines available for...
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Probability question: A mail-order department store has 5 telephone lines available for...

[From: ] [author: ] [Date: 12-04-15] [Hit: ]
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A mail-order department store has 5 telephone lines available for customers who wish to place their orders. If the probability that during business hours any one of the 5 telephone lines is engaged is 1/3, find the probability that when a customer calls to place an order all 5 lines will be in use.
Thanks

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=(1/3)*(1/3)*(1/3)*(1/3)*(1/3)
=(1/3)^5
=(1/243)
1
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