ECE 302, Homework #8. Due date: 3/23
http://www.ece.purdue.edu/
∼
chihw/ECE302
07.html
Prof. Chih-Chun Wang
Email: [email protected]
Office: MSEE354
Office Hours: MWF: 12pm–1pm
TA: Kamesh Krishnamurthy,
Email: [email protected]
Office: POTR 370
Office Hours: M: 10–11am
TTh: 10:30am–12:30pm
Question 1:
Consider
X
is an exponential random variable with
f
X
(
x
) =
(
λe
-
λx
if
x
≥
0
0
if
x <
0
.
Find out the mean and the variance of
X
. Your answer should be the same as that in
Table 3.2, p. 101.
Question 2:
Consider a binomial random variable
X
=
Y
1
+
Y
2
+
· · ·
+
Y
n
, where each
Y
i
is independently Bernoulli distributed with parameter
p
. We know that
X
is then a
binomial random variable with parameters (
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- Spring '08
- GELFAND
- Probability theory, binomial random variable, [email protected], Kamesh Krishnamurthy, [email protected]
-
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