Poisson Distribution : Calculating x : ExamSolutions

This is the 3rd in a series of tutorials on the Poisson Distribution. In this tutorial you are shown how to find an observed value when given a probability which uses the cumulative probability tables for the Poisson Distribution. To see this and other tutorials in this series goto ExamSolutions at http://www.examsolutions.co.uk

Category:

Education

Tags:

• Poisson
• probability
• distribution
• Exam solutions
• ExamSolutions
• A-level
• statistics

[jipra]

In the last example, shouldn't it be P(X (less than or equal to) x) (greater than or equal to) 0.99 instead of (greater than) 0.99? The example says that the probability should be _at least_ a 0.99 so the 0.99 should be included in the probability. If the assignment had been "...in order to have more than 99% chance..." then the 'greater than' sign would have been correct.

[ExamSolutions]

@jipra You are correct but it does not alter the outcome.

[geehugo]

This is really clear.

Thank you so much for your time.

[ExamSolutions]

@geehugo No probs - thank you

[POOPS0]

Thank you for these tutorials.

[ExamSolutions]

Pleasure - are they worth 5 stars?

[Shua988]

How P(x=4) = P(x less than n equal to 4) - P(x less than n equal to 3)

[jipra]

@ExamSolutions I know it doesn't change the outcome but I just wanted to point out that little mistake :) Anyways, I really appreciate the effort you have made in creating these helpful videos. Keep up the great work :)

[ExamSolutions]

@mistrysun Cool

[hongabonga12345]

Very professional way of education and teaching.

Clear, simple and to the point.

I was looking for the stars but didn't find the option!

So, thumb's UP! (i would give you 10 thumbs but only one is there and you deserve it!)

Great thanks!

keep on.

[th2]

another great video