Solution :
The average number of the arrivals, λ = 6 per hour
Average service rate, 
= 8
Average number of the customers in the system is given by,


= 3
Average number of the customers that are waiting in the line behind the person who are being served is,


= 2.25
Proportion of the time the server is busy,


= 0.75
Answer:
d. Strategy implementation.
Explanation:
Strategic implementation is the process of putting the strategy into action.
After strategic planning, which is the definition of the action plans necessary for a company to achieve the defined objectives and goals, it is the phase of strategic implementation, which is the process of executing the plans defined in the planning stage.
Therefore, when implementing the strategy in an organization, it is necessary that the action plans are constantly monitored, so that the managers can have knowledge of the performance of the designed strategy, to prevent failures, correct some essential factor for the effectiveness of the action plans, monitor the internal and external environment, monitor the performance of employees, etc., in order to seek continuous improvement of the company's strategic action processes to achieve the expected objectives.
Assume a project has normal cash flows. According to the accept/reject rules, the project should be accepted if the: IRR exceeds the required return.
Internal rate of return (IRR) is a metric used in financial analysis to estimate the potential profitability of an investment. The IRR is the discount rate that drives the net present value (NPV) of all cash flows to zero in discounted cash flow analysts. This suggests that an expected angel investment IRR of at least 22% is considered a good IRR. The higher
the project's projected IRR and the higher the amount above its cost of capital, the more net cash the project brings to the firm. So in this case the project appears to be profitable and management should go ahead with it.
Learn more about IRR here
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Bank interest is when you leave money in the bank for saving purposes. Then the money stays in the bank and you get money for keeping your money in the bank.