# Conditional mean and variance for joint PDF

## Answer

**Answers can only be viewed under the following conditions:**

- The questioner was satisfied with and accepted the answer, or
- The answer was evaluated as being 100% correct by the judge.

1 Attachment

Erdos

4.7K

The answer is accepted.

Join Matchmaticians Affiliate Marketing
Program to earn up to a 50% commission on every question that your affiliated users ask or answer.

- answered
- 551 views
- $5.00

### Related Questions

- Cramer's Theorem question
- Statistics Probability
- Geometric distribution
- X is number of (fair) coin flips needed to land m heads OR m tails. m is arbitrary natural number. Delfine CDF of X. (in It's simplest form)
- Stats question
- statistics- data analysis
- Please check if my answers are correct - statistic, probability
- stats - data analysis

What's the probability space?

All information are given in the file. I think we need to find the value of the constant first.

No, sorry, that doesn't make sense to me. f must be a function from a probability space to R. As presented, it's a function from RxR to R, but RxR is not a probability space. I guess one can restrict to the subspace defined by x>0, y>0, 1

Also k only influences the value of the function, not the domain, so that's not to be considered.