Posted by **qwerty** on Tuesday, March 4, 2014 at 11:37am.

For each of the following statements, determine whether it is true (meaning, always true) or false (meaning, not always true). Here, we assume all random variables are discrete, and that all expectations are well-defined and finite.

Let X and Y be two binomial random variables.

a) If X and Y are independent, then X+Y is also a binomial random variable.

b) If X and Y have the same parameters, N and P , then X+Y is a binomial random variable.

c) If X and Y have the same parameter P , and are independent, then X+Y is a binomial random variable.

d) Suppose that E(X)=0 . Then, X=0 .

e) Suppose that E(X^2)=0 . Then, P(X=0)=1 .

## Answer this Question

## Related Questions

- probability - Determine whether each of the following statement is true (i.e., ...
- mATH ANSWERS - 1) If the odds in favor of an event A are 3 to 1, what is the ...
- Math - Determine whether the statement is true, false, or sometimes true. ...
- Math - a.)If ABCD is a parallelogram, then ABCD is (always true, sometimes true...
- Physics Please check my answers - It's possible for a body to have both ...
- Dimension Personal Education - True or False: The indefinite pronouns both, few...
- Physics - Pease evaluate the statements by choosing from these three statements ...
- Pre-Calculus - Graphing Polynomials Decide whether each of the following is ...
- grammar - The indefinite pronouns,all, any, more, most, and some are always ...
- science - Let , , and be disjoint subsets of the sample space. For each one of ...