Math Is Fun Forum

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

probability distribution questions

By swapnilmergal

I have moved your two posts together here in the Help Me section.  You had added them to a thread that had to be deleted as math spam.  Bob

(1)
given F(X)=k 2^-x is probability distribution  for a random variable that can take on the values x =0, 1,2, 3 and 4. Find k and the cumulative probability distribution F(x).

(2)
Let X and Y be two independent Gaussian random variables, both having mean 0, variance 1/4 and 1/9, respectively. Find the probability of P(3X >= 2Y)

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

mathxyz

Member

From: Brooklyn, NY

Registered: 2024-02-24

Posts: 1,053

Re: probability distribution questions

By swapnilmergal

I have moved your two posts together here in the Help Me section.  You had added them to a thread that had to be deleted as math spam.  Bob

(1)
given F(X)=k 2^-x is probability distribution  for a random variable that can take on the values x =0, 1,2, 3 and 4. Find k and the cumulative probability distribution F(x).

(2)
Let X and Y be two independent Gaussian random variables, both having mean 0, variance 1/4 and 1/9, respectively. Find the probability of P(3X >= 2Y)

Bob,

Are you sure this person is not responsible for the recent indecent posts here?

Last edited by mathxyz (2024-05-13 03:50:19)

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: probability distribution questions

I don't think so. As I've deleted the guest post I cannot check back now. The question poster may have just added to the most recent post.  I'll watch and await events. The two questions are legit. Not my favourite area so I'm hoping someone else will take up the challenge.

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

mathxyz

Member

From: Brooklyn, NY

Registered: 2024-02-24

Posts: 1,053

Re: probability distribution questions

I don't think so. As I've deleted the guest post I cannot check back now. The question poster may have just added to the most recent post.  I'll watch and await events. The two questions are legit. Not my favourite area so I'm hoping someone else will take up the challenge.

Bob

We don't want dirty topics in a math forum. I hope the person goes away. You see, misery loves company.