Statistics 13C
Homework # 3
For discussion, Tues, 10/15/08
F. J. Samaniego
From the text: Chapter 4:
# 31, 32, 37, 83, 85, 91, 92, 124;
Chapter 5:
# 8, 25
Also, solve the following problems:
1. An ASUCD commission consists of 5 males and 7 females.
A 3person
subcommittee is to be formed to study the question of whether semesters are
preferable to quarters.
(a) How many different subcommittees are possible?
(b) How many different subcommittees are possible if Andy and Merlene are
feuding and refuse to serve together? (c) How many different subcommittees
are possible if allmale and allfemale subcommittees are not allowed?
2. There’s a peeping Tom in Beavis and Butthead’s neighborhood, and both
Beavis and Butthead are suspects.
They will shortly be appearing in a “line
up”, that is, a straight line consisting of five suspects.
Suppose that Beavis
and Butthead are assigned their places at random. Let X be the number of
people standing between Beavis and Butthead. (a) Find the probability
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 Spring '07
 Leong
 Statistics, Beavis, blue marbles, different subcommittees

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