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| − | + | Distinction to make for yourself when solving: is 'mean' taken over all values of X, or only values of X such that pdf(x) is nonzero? | |
===Answer 2=== | ===Answer 2=== | ||
Write it here | Write it here | ||
Revision as of 17:44, 3 March 2013
Contents
Practice Problem: normalizing the probability mass function of a continuous random variable
A random variable X has the following probability density function:
$ f_X (x) = \left\{ \begin{array}{ll} k, & \text{ if } a\leq x \leq b,\\ 0, & \text{ else}, \end{array} \right. $
where k is a constant. Compute the mean of X.
You will receive feedback from your instructor and TA directly on this page. Other students are welcome to comment/discuss/point out mistakes/ask questions too!
Answer 1
Distinction to make for yourself when solving: is 'mean' taken over all values of X, or only values of X such that pdf(x) is nonzero?
Answer 2
Write it here
Answer 3
Write it here.
