Solution :
The average number of the arrivals, λ = 6 per hour
Average service rate, ![$\mu = \frac{60 \times 2}{15}$](https://tex.z-dn.net/?f=%24%5Cmu%20%3D%20%5Cfrac%7B60%20%5Ctimes%202%7D%7B15%7D%24)
= 8
Average number of the customers in the system is given by,
![$= \frac{\lambda}{\mu - \lambda }$](https://tex.z-dn.net/?f=%24%3D%20%5Cfrac%7B%5Clambda%7D%7B%5Cmu%20-%20%5Clambda%20%7D%24)
![$= \frac{6}{8 - 6 }$](https://tex.z-dn.net/?f=%24%3D%20%5Cfrac%7B6%7D%7B8%20-%206%20%7D%24)
= 3
Average number of the customers that are waiting in the line behind the person who are being served is,
![$=\frac{\left(\frac{6}{8}\right)^2}{1-\frac{6}{8}} $](https://tex.z-dn.net/?f=%24%3D%5Cfrac%7B%5Cleft%28%5Cfrac%7B6%7D%7B8%7D%5Cright%29%5E2%7D%7B1-%5Cfrac%7B6%7D%7B8%7D%7D%20%24)
![$=\frac{(0.75)^2 }{0.25} $](https://tex.z-dn.net/?f=%24%3D%5Cfrac%7B%280.75%29%5E2%20%7D%7B0.25%7D%20%24)
= 2.25
Proportion of the time the server is busy,
![$=\frac{\lambda}{\mu}$](https://tex.z-dn.net/?f=%24%3D%5Cfrac%7B%5Clambda%7D%7B%5Cmu%7D%24)
![$=\frac{6}{8}$](https://tex.z-dn.net/?f=%24%3D%5Cfrac%7B6%7D%7B8%7D%24)
= 0.75
<span>General motors targets several different market segments and designs separate automobile makes and models for each. This is an example of <u>differentiated marketing.
</u><u />Instead of focusing on one single target market, this company focuses on multiple segments and types of markets and creates different products for each of them. This, they are improving their profits and taking into consideration their consumers' needs and what they want in their products.<u>
</u></span>
A public good, public goods are non both non-excludable and non-rivalrous. Non-excludable means that individuals can not be excluded from using it. Use by one individual does not reduce the availability. Examples include knowledge, streetlights and light houses