![subject](/tpl/images/cats/mat.png)
Mathematics, 13.10.2020 04:01 fatty18
We want to decide whether to employ a human operator or buy a machine to paint steel beams with a rust inhibitor. Steel beams are produced at a constant rate of one every 14 minutes. A skilled human operator takes an average time of 700 seconds to paint a steel beam, with a standard deviation of 300 seconds. An automatic painter takes on average 40 seconds more than the human painter to paint a beam, but with a standard deviation of only 150 seconds. Estimate the expected waiting time in queue of a steel beam for each of the operators, as well as the expected number of steel beams waiting in queue in each of the two cases. Comment on the effect of variability in service time.
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:30
Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse
Answers: 1
You know the right answer?
We want to decide whether to employ a human operator or buy a machine to paint steel beams with a ru...
Questions
![question](/tpl/images/cats/fizika.png)
Physics, 27.05.2021 20:50
![question](/tpl/images/cats/istoriya.png)
History, 27.05.2021 20:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
Arts, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/en.png)
English, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/en.png)
English, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 27.05.2021 20:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 27.05.2021 20:50