Barber College is the best deal in town! For only $5, you can get a shampoo and cut by any one of four untrained stylists completed in 7.5 minutes on average. Perhaps this is why customers show up on average two minutes apart (both arrival times and service times are exponentially distributed). On average, how many customers are waiting in line?
A)9
B)11
C)13
D)15

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The Answer of Barber College is the best deal in town! For only $5, you can get a shampoo and cut by any one of four untrained stylists completed in 7.5 minutes on average. Perhaps this is why customers show up on average two minutes apart (both arrival times and service times are exponentially distributed). On average, how many customers are waiting in line?
A)9
B)11
C)13
D)15

Barber College Is the Best Deal in Town! for Only