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# Little help would be appreciated watch

1. Let X be a discrete random variable, and let a be such that p(a)>0. Show that F(a)=P(X<a)+p(a)

Any help would be appreciated. All that has come to is to try and prove that P(X<a)+p(a)=P(X<=a) and therefore showing the statement (?)
Let X be a discrete random variable, and let a be such that p(a)>0. Show that F(a)=P(X<a)+p(a)

Any help would be appreciated. All that has come to is to try and prove that P(X<a)+p(a)=P(X<=a) and therefore showing the statement (?)
Wtf is F? and what is p.
3. (Original post by Renzhi10122)
Wtf is F? and what is p.
We aren't told, that is all that the question tells us.
We aren't told, that is all that the question tells us.
Post the whole question please. With a pic.
5. Is this statistics?
6. (Original post by Miss.Modesty)
Is this statistics?
Yes, first year
7. This is the question(exercise 4.3)
8. I'm doing it too, I was flicking through our textbook and i realised my teacher skipped that topic :/, because we are finishing off chapter 4 and 6. Sorry I'm no help :8
9. (Original post by Miss.Modesty)
I'm doing it too, I was flicking through our textbook and i realised my teacher skipped that topic :/, because we are finishing off chapter 4 and 6. Sorry I'm no help :8
It's no problem
It's no problem
What's the definition of F?

Edit: Or if you're feeling lazy, look on page 50.
11. (Original post by ghostwalker)
What's the definition of F?

Edit: Or if you're feeling lazy, look on page 50.
Isn't F just the distribution function?
Isn't F just the distribution function?
Yes.

So, F(x) = ?

Edit: Since this isn't gettting anywhere, I suggest you just look at page 50 of the book, it has the working.

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