Mathematics, 18.02.2020 17:49, hfroslie9840
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 11 minutes. A skilled human operator takes an average time of 600 seconds to paint a steel beam, with a standard deviation of 30 seconds. An automatic painter takes on average 30 seconds more than the human painter to paint a beam, but with a standard deviation of only 10 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.
Answers: 2
Mathematics, 21.06.2019 18:00, puffley
10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.
Answers: 1
Mathematics, 21.06.2019 19:00, thegreentnt5025
1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is:
Answers: 2
Mathematics, 21.06.2019 20:30, Franciscoramosxt
What is the difference between the equations of a vertical and a horizontal line?
Answers: 2
We want to decide whether to employ a human operator or buy a machine to paint steel beams with a ru...
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