Question: Please use software for avoiding rounding error. In a grocery store, there is one cashier counter. Customers arrive at the cashier counter according to a

Please use software for avoiding rounding error.

In a grocery store, there is one cashier counter. Customers arrive at the cashier counter according to a Poisson process. The arrival rate is 25 customers per hour. The service time is exponentially distributed. The mean service time is 1 minute 30 seconds.

What is the utilization rate (unit in %) of the cashier? Only number will be accepted for the answer and write up to two digits after the decimal point if you need.

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