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08.10.2019 •
Mathematics
Organisms are present in ballast water discharged from a ship according to a poisson process with a concentration of 10 organisms/m3 (the article "counting at low concentrations: the statistical challenges of verifying ballast water discharge standards"† considers using the poisson process for this purpose). what is the probability that one cubic meter of discharge contains at least 6 organisms?
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Ответ:
There is a 93.28% probability that one cubic meter of discharge contains at least 6 organisms.
Step-by-step explanation:
The number of organisms in a cubic meter of discharge is a Poisson process. So, we use the following definition:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
Organisms are present in ballast water discharged from a ship according to a Poisson process with a concentration of 10 organisms/m3. This means that![\mu = 10](/tpl/images/0298/6396/e632e.png)
What is the probability that one cubic meter of discharge contains at least 6 organisms?
This is
. We know that either we have less than 6 organisms, or we have at least 6 organism. The sum of the probabilities is decimal 1. So
In which
Each one of these probabilities can be found by the poisson formula.
So
So
Finally
There is a 93.28% probability that one cubic meter of discharge contains at least 6 organisms.
Ответ:
only one line can be drawn
Step-by-step explanation: