Friday
July 25, 2014

Homework Help: Probability

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

First Name:
School Subject:
Answer:

Related Questions

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. ...
science - Let , , and be disjoint subsets of the sample space. For each one of ...
Math - a.)If ABCD is a parallelogram, then ABCD is (always true, sometimes true...
math - Determine whether the statement is always true, sometimes true, or never ...
Dimension Personal Education - True or False: The indefinite pronouns both, few...
Pre-Calculus - Graphing Polynomials Decide whether each of the following is ...
Grammar and Composition - please check my answers: Write true if the statement ...
Algebra - A positive integer minus a positive integer is always positive. This ...
math - the following statement always true, always false, or true in some cases ...

Search
Members