Survey Sampling
HW10 -Chapter 14
Problem 14.1
25+37 = 62, 25+15 = 40
n = 40*62/25 = 99.2
N = 99.2*3575/525 = 676
The estimated number of abnormalities among the 3575 workers is 676.
Problem 14.2
So th
Stat 515: Regression
Homework 1.
Due Thursday, October 6
Instructions: Problems are from the text Applied Linear Regression Models, Fourth Edition,
by Kutner, Nachtsheim, and Neter. Data can be found
Stat 530, Mathematical Statistics, HW #12
Fall 2012
Due: Wednesday, Dec. 5
1. 3.4.11
This is called truncated Normal. For E ( X ) xf ( x)dx , use integration by
substitution with u x 2 .
2. 3.4.28
Use
Stat 530, Mathematical Statistics, HW 12
Fall 2012
Due: Wednesday, Nov. 28
1. 3.2.3
2. 3.2.5
After you determine the lower bound, use software to find the probability.
3. 3.2.10
Hint: Find a, such tha
Stat 530, Mathematical Statistics, HW 10
Due: Wednesday, Nov. 14
1. 3.1.6
Consider the compliment event to simplify the computation.
2. 3.1.18
3. 3.1.23
4. 3.1.27
(This problem is not available in the
Stat 530, Mathematical Statistics, HW 8
Fall 2012
Due: Wednesday, Oct. 31.
1. Read textbook p.104~107: Theorem 2.4.1, Example 2.4.2 and Example 2.4.3.
2. 2.4.2
3. 2.4.3
Take the conditional means as k
Stat 530, Mathematical Statistics, HW 9
Fall 2012
Due: Wednesday, Nov. 7
1. 2.6.1(skip c, d)
Note that the marginal pdfs (hence, the cdfs) of X, Y, Z are identical. (Why?)
2. 2.6.3
3. 2.7.1
First, fin
Stat 530, Mathematical Statistics, HW #1
Fall 2012
Due: Wednesday, Sept. 5
From textbook, p.8
1. 1.2.2
2. 1.2.4
Hint: To prove two sets A=B, show that: x A x B , and x B x A .
3. 1.2.8
4. 1.2.11
5. 1.