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Ganezh [65]
3 years ago
15

A suburban specialty restaurant has developed a single drive-thru window. Customers order, pay, and pick up their food at the sa

me window. Arrivals follow a Poisson distribution, while service times follow an exponential distribution. If the average number of arrivals is 6 per hour and the service rate is 3 every 15 minutes:What is the average number of customers in the system?
A. 0.50B. 1.00C. 2.25D. 3.00E. None of the above
Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
8 0

Answer:  Option 'c' is correct.

Step-by-step explanation:

Since we have given that

Average number of arrivals = 6 per hour

Service rate = 3 every 15 minutes

Service rate is given by

\mu=\dfrac{60\times 3}{15}=12

So, the average number of customers in the system is given by

\dfrac{\mu}{\mu-\lambda}\\\\=\dfrac{6}{12-6}\\\\=\dfrac{6}{6}\\\\=1

Hence, Option 'c' is correct.

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Describe how to transform the graph of g(x)= ln x into the graph of f(x)= ln (3-x) -2.
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Answer:

The graph of g(x) = ㏑x translated 3 units to the right and then reflected

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Step-by-step explanation:

* Lets talk about the transformation

- If the function f(x) reflected across the x-axis, then the new

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- If the function f(x) reflected across the y-axis, then the new

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- If the function f(x) translated horizontally to the right  

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- If the function f(x) translated horizontally to the left  

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- If the function f(x) translated vertically up  

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- If the function f(x) translated vertically down  

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* lets solve the problem

∵ Graph of g(x) = ㏑x is transformed into graph of f(x) = ㏑(3 - x) - 2

- ㏑x becomes ㏑(3 - x)

∵ ㏑(3 - x) = ㏑(-x + 3)

- Take (-) as a common factor

∴ ㏑(-x + 3) = ㏑[-(x - 3)]

∵ x changed to x - 3

∴ The function g(x) translated 3 units to the right

∵ There is (-) out the bracket (x - 3) that means we change the sign

  of x then we will reflect the function about the y-axis

∴ g(x) translated 3 units to the right and then reflected about the

   y-axis

∵ g(x) changed to f(x) = ㏑(3 - x) - 2

∵ We subtract 2 from g(x) after horizontal translation and reflection

  about y-axis

∴ We translate g(x) 2 units down

∴ g(x) translated 3 units to the right and then reflected about the

   y-axis and then translated 2 units down

* The graph of g(x) = ㏑x translated 3 units to the right and then

  reflected about the y-axis and then translated 2 units down to

  form the graph of f(x) = ㏑(3 - x) - 2

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