The question is as follows:
"
In a certain country:
10% of the families have no children
20% of the families have 1 child
30% of the families have 2 children
40% of the families have 3 children
one child is randomly chosen from all the children in the country.
X is a random variable whose value is the number of brothers/sisters said sampled child has.
"
What is the probability function of X?
notes:
1 - the underlines are from the original test question
2 - let me know if you want to see my answer against that of my professor. I thought it might be better to see how you answer without any former bias - but i might be mistaken about that(too? :< )
Thanks!
"
In a certain country:
10% of the families have no children
20% of the families have 1 child
30% of the families have 2 children
40% of the families have 3 children
one child is randomly chosen from all the children in the country.
X is a random variable whose value is the number of brothers/sisters said sampled child has.
"
What is the probability function of X?
notes:
1 - the underlines are from the original test question
2 - let me know if you want to see my answer against that of my professor. I thought it might be better to see how you answer without any former bias - but i might be mistaken about that(too? :< )
Thanks!