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ECE 450
Homework Set 2 Complete Solutions
1. Two dice are tossed; let X be the sum of the numbers appearing.
a. Graph the CDF, FX(x), and the pdf, fX(x).
b. Use the CDF to find: Pr(7 X 9). Check your answer using the pdf.
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ECE 450
1
Homework Set 2
Solve these problems after Lecture #4:
1. Two dice are tossed; let X be the sum of the numbers appearing.
a. Graph the CDF, FX(x), and the pdf, fX(x).
b. Use the CDF to find: Pr(7 X 9). Check your answer using the pdf.
2. For the

ECE 450 1
Fall 15
Homework Set #1
Part I: COMBINATORICS (follows Lecture 1)
1. The Supreme Court (9 members) meet, and all the justices shake
hands with each other. How many handshakes are there?
2. A country has license plates made up of 3 letters, follo

ECE 450: Homework Set 1
Some Part 2 Answers
1. Pr(7 or 11) on toss of 2 dice = 2/9
2. Pr(Q of ) in 5-card poker = 5/52
3. Pr(all 4 get their coats back) = 1/24
4. Pr(J & M same password) = 1/1,247,714
8.015*10-7
5. Pr(failure) = .4233
8a. Pr(launch) = .0