1. Suppose that in a waiting line problem, the average time between customer arrivals increases. Then, the average waiting time in line would be expected to

a) increase.

b) decrease.

c) stay the same.

2. At a walk-in medical clinic, the time between customer arrivals averages 45 seconds. On average, a customer spends 5 minutes at the center. What is the average arrival rate per hour?

a) 12 per hour.

b) 45 per hour.

c) 75 per hour.

d) 80 per hour.

e) none of the above.

3. Forecasts for groups of products are generally

a) less accurate than forecasts for individual products.

b) more accurate than forecasts for individual products.

c) about the same accuracy as forecasts for individual products.

4. Qualitative forecasting is best used

a) when there is a large amount of data and time available to make the forecast.

b) when there is little data or time available to make the forecast.

5. When data for more time periods are used to make a moving average forecast, then the forecast will generally

a) respond more quickly to changes in demand.

b) respond less quickly to changes in demand.

6. At a busy coffee shop, the time between customer arrivals averages 2 minutes. On average, a customer spends 3 minutes and 20 seconds in service receiving their coffee order. What is the average service rate per hour?

a) 3.2 per hour.

b) 3.333 per hour.

c) 18 per hour.

d) 30 per hour.

e) none of the above.