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pwolfiimp4
08.03.2021 •
Mathematics
The total service time of a multistep manufacturing operation has a gamma distribution with mean 18 minutes and standard deviation 6 minutes.
(a) Determine the parameters alpha and lambda of the distribution. (solving these two parameters using the mean and the standard deviation)
(b) Assume that each step has the same exponential distribution for service time. What distribution for each step and how many steps produce this gamma distribution of total service time?
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Ответ:
The answer is "
"
Step-by-step explanation:
In point a:
We are aware of the random gamma variable X:
It is given:
Substituting the value:
In point b:
When building the Erlang/Gammas distribution, these could reasonably be assumed to become an exponential distribution only with \lambda = 1/2 parameter with one step but to be r = 9 for one step.
Ответ:
the equation second grade is
h^2+22,4h = 1837
you must subtract the second coefficient and divide it by 2 ; 22,4 / 2 = 11,2, then elevate it to 2, ( 11,2 )^2 = 125,44
then
h^2+22,4h + 125,44 -125,44 = 1837
now √h^2 = h and √125,44 = 11,2
(h+11,2)^2 -125,44 = 1837 ( dimensions of the screen )