Random Processes | Poisson or not? | Probability of doing n jobs in t hours

In summary, The mean processing time for a certain type of job is 2 hours with a standard deviation of 2 hours. Assuming independent processing times, we can approximate the probability of processing at least 50 jobs sequentially within 240 hours using the Central Limit Theorem and a Gaussian distribution. The multiple random variables involved are the processing time for each job in the sequence. The 240 hours will factor into the calculation as the time constraint for processing the jobs.
  • #1
dharavsolanki
79
0

Homework Statement


The number of hours that it takes to process a certain type of job is a random variable with mean and standard deviation 2. AAssuming that processing times are independent, approximate the probability that atleast 50 jobs can be sequentially processed within 240 hours.


Homework Equations





The Attempt at a Solution


How should I approach this question? Can we use Poisson process for this equation? Please justify this point. Thank you again.
 
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  • #2
Central Limit theorem looks appropriate using Gaussian distribution.
 
  • #3
rootX said:
Central Limit theorem looks appropriate using Gaussian distribution.

Here are my doubts:

* Central Limit Theorem will apply on multiple random variables.What are the multiple random variables here? Processing time for each job?
* "atleast 50 jobs can be sequentially processed within 240 hours"... so the time required for each job in the sequence will be a random variable. How will i figure 240 hours here in the calculation?
 

1. What is a random process?

A random process is a mathematical model used to describe the behavior of a system over time, where the outcome of the process is determined by chance or probability. It involves a sequence of random events that occur over time.

2. What is a Poisson process?

A Poisson process is a type of random process where events occur randomly and independently of each other over a continuous time interval. It is often used to model the arrival of customers or requests in a queue, radioactive decay, or the occurrence of natural disasters.

3. How do you determine if a process follows a Poisson distribution?

A process can be considered a Poisson process if it satisfies the following criteria:

  • The number of events occurring in a given time interval is independent of the number of events occurring in any other non-overlapping time intervals.
  • The probability of an event occurring in a small time interval is proportional to the length of the interval.
  • The probability of more than one event occurring in a small time interval is negligible.

4. What is the probability of completing n jobs in t hours?

The probability of completing n jobs in t hours can be calculated using the Poisson distribution formula, which takes into account the average rate of job completion (lambda) and the desired number of jobs to complete (n). The formula is: P(n,t) = (lambda*t)^n * e^(-lambda*t) / n!

5. Can the Poisson distribution be used to model real-life situations?

Yes, the Poisson distribution is commonly used to model real-life situations in various fields such as physics, biology, finance, and engineering. It is especially useful in situations where the events occur randomly and independently over time, making it a good approximation for the behavior of the system.

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