STAT 466
HOMEWORK 2
SOLUTIONS
Problem 1( 20 points)
Problem 2 (20 points)
Problem 3 (0 points)
4.10
Sampling Method II will give you an unbiased estimate of the average class size. The
unit is the class, and you are taking a random sample from the classes

STAT 466 SURVEY SAMPLING
HOMEWORK 1 SOLUTION
Problem 1 (20 points)
Problem 2. Exercise 2.7 (0 points)
(a) The executive of a television program is sampling the viewer in the country to estimate the
proportion of viewers who watch a particular network at a

Homework 12. Due Dec 9
(Solution will be posted on Friday , Dec 11)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selecte

Homework 10. (due Wednesday, Nov 18)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from

Homework 11. (due Wednesday, Dec 2)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from

Homework 8. (due Wednesday, Oct 28)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from

Homework 9. (due Wednesday, Nov 4)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from t

Homework 7. (due Wed , Oct 21)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from the b

Homework 6. (due Wed, Oct 7)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from the boo

Homework 4. (due Wednesday, Sept 23)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from

Homework 5. (due Wed, Sept 30)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from the b

STAT 466
HOMEWORK 11 SOLUTIONS
Problem 1(20pts)
Problem 2(0pts)
Problem 3(20pts)
Problem 4(20pts)
Problem 5(20 points)
Problem 6(20 points)
Problem 7 (0 points)
Problem 8 (0 points)

Homework 3. (due Wednesday, Sept 16)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from

Homework 2. (due Wednesday, Sept 9)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from

STAT 466
HOMEWORK 12 SOLUTIONS
Problem 1(20pts)
Problem 2(20pts)
Problem 3(20pts)
Problem 4(20pts)
Problem 5(20 points)
Its a double sampling problem. Observe the following:
'
'
'
N=1420, n =120, n1=44, n2=76, n1=44,n 2=22
n'1 44
n'2 76
a ' 1= ' =
=0.3667

STAT 466
HOMEWORK 10 SOLUTIONS
Problem 1(20pts)
Problem 2(0pts)
Problem 3(20pts)
Problem 4(20pts)
Problem 5(20 points)
Problem 6(20 points)
Problem 7 (0 points)

STAT 466
HOMEWORK 9 SOLUTIONS
Problem 1(20pts)
Problem 2(20 points)
Problem 3(20 points)
Problem 4 (20 points)
Problem 5 (20 points)
Problem 6 (0 points)
Problem 7 (0 points)

Homework 1. (due Wed, Sept 2)
The following numbered homework assignments refer to the
problems in the textbook: Elementary Survey Sampling (e.g.
2.7 refers to exercise 2.7 found on p.39 of the book)
Note that selected Answers to some problems from the bo

STAT 466
HOMEWORK 7 SOLUTIONS
Problem 1(20pts)
Problem 2(20pts)
N=120, B=0.05, s 2r =0.1407 2=0.0198
2
N s r
120 0.0198
n=
=
=25 .06
2
0.0025
B
2
120
+
0.0198
N +s r
4
4
Therefore, the researcher should sample n=26 rabbits.
Problem 3(20pts)
Problem 4(20pt

STAT 466
HOMEWORK 4 SOLUTIONS
Problem 1 (20pts)
Problem 2 (40pts)
(a) We first take a random sample of five states from the dataset. As the first row is the
actual total for the United States. We eliminate it before taking samples. Do this step in
Minitab

STAT 466
HOMEWORK 5 SOLUTIONS
Problem 1 (20pts)
Problem 2 (20pts)
Problem 3(20pts)
Problem 4(20pts)
Problem 5(0pts)
A simple random sampling would work just as well since the two strata are not so different both in sample
mean and sample variance.
Problem

STAT 466
HOMEWORK 3
SOLUTIONS
Problem 1( 20 points)
Problem 2 (0 points)
(a)
(b) We use 0.5 for p in conservative method.
(c) We now use 0.43 for p and follow the same calculation in (b)
Problem 3 (20 points)
Problem 4 (0 points)
Problem 5 (20 points)
Pro

Problem 1(20pts)
Problem 2(20 points)
STAT 466
HOMEWORK 8 SOLUTIONS
(c)
i) When n=4 :
404
0.40.6
(
401 )
pq
=
=0.0554
( NN n
1 ) n
V ( ^p srs ) =
4
V ( ^p )=0.1275>0.0554
Therefore, S.R.S is better than SS.
ii) When n=8 :
408
0.40.6
(
401 )
pq
=
=0.0246
(