The average service rate at a Service Centre is 8 customer/hr, which varies exponentially. Customers arrive at random order with an average of 6 customer/hr. The probability of at least 3 customers in the system is____Correct answer is between '0.41,0.43'. Can you explain this answer?

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The average service rate at a Service Centre is 8 customer/hr, which varies exponentially. Customers arrive at random order with an average of 6 customer/hr. The probability of at least 3 customers in the system is____

Correct answer is between '0.41,0.43'. Can you explain this answer?

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The average service rate at a Service Centre is 8 customer/hr, which v...

At least 3 in system means 3 or more customers in system,

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