# Topic 1: Binomial, (post for discussion forum)

**Topic 1: Binomial**View Full Description

Hi Everyone,

Review the criteria for a binomial in the announcements before selecting your problem.

Example

a) On this example we will examine the probability a couple who has 8 children and has exactly 5 boys.

b) Next we will look at the probability that they have more than 5 boys.

c) Finally we will look at the probability that they have at most 5 boys.

Assume a .5 chance of having a boy.

Solution can be solved using excel.

a) On this example we will examine the probability a couple who has 8 children has exactly 5 boys.

Type this in an excel cell

=binom.dist(5,8,.5,False)

and then hit enter

.21875 would be the answer

b) Next we will look at the probability that they have more than 5 boys.

Type this in an excel cell

=1-binom.dist(5,8,.5,True)

and then hit enter

.144531 would be the answer

c) Finally we will look at the probability that they have at most 5 boys.

Assume a .5 chance of having a boy.

Type this in an excel cell

=binom.dist(5,8,.5,True)

and hit enter

.855469 would be the answer

Instructions:

- For your post you will make up a problem similar to your example Try to have at least 3 scenarios. You will not solve your own problem.
- Then you will answer 2 classmates problems showing your work using excel similar to the solution that was posted.

Instructions: Your initial post may not be 250 words. Please respond to at least 2 other students. Responses should be a minimum of 100 words and include direct questions.