Q2. Clare works at the front desk of DESB. Between 10:30am and 11:00am, 10 students stop by to ask questions on average. It usually takes 3 minutes to answer a question. What is the average number of students either waiting or asking questions to Clare at the front desk? (Be careful when you find the flow rate for this question!)

One student is waiting at the front desk.

Explanation:

By Using Little's law, we have:

L = R  *  T

Here

L is the average number of items in the system which is average students waiting in this case

R (Arrival Rate) =  Total Students / Time taken = 10 Students / 30 minutes

R = 0.33 student per minute

T is the time taken for each student which is 3 minutes

By putting the above values, we have:

L = 0.33 * 3 = 1 student waiting

answer; niosh, the national institute for occupational safety and health;

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