Question 460:

Asked on October 5, 2008

Tags: BINOMDIST , Binomial pmf

1

Answer:

No answer provided yet.

You can answer this question quickly if you have access to Excel, it will make your calculations a lot faster. Use the formula =BINOMDIST(). The parameters you use are the number of kids dancing, the total number selected, the probability of a kid dancing and either the cumulative probability of exact probability.

So, type =BINOMDIST(4,10,0.2,FALSE) and you should get the exact probablity of .088, or there is about an 8.8% chance if you select 10 kids, exactly 4 will have danced. For more detailed calculations on the Binomial Distribution see question 175