Stat 5411
Fall 2012
Exam 2
Answers
(1) (a)
(b)
(c)
(2) The difference between strengths of pine and fir boards are the same for all glues. Or equivalently, the
differences between strengths of the 3 g
Stat 5411
Midterm 1, Fall 2013
Name
Instructions: You have 50 minutes to complete this exam. Write answers in the space provided below
each question. If you need more room, you can use the back of the
Stat 5411
Midterm 1 Solution, Fall 2013
Name Dr. Solution
1. The recipe for producing a high-quality cement species that the required percentage of SiO2 is 6.2%.
A quality control engineer evaluates t
Practice Exam 1 Part 2
1. Monamine oxidase (MAO) is an enzyme that may aect human behavior. To determine
if dierent types of schizophrenic patients have dierent levels of MAO in their blood, researche
Stat 5411 - Analysis of Variance (Fall 2013)
Exam 2 Practice
1. A manufacturer conducted a small pilot study of the eect of the price of one of its
products on sales of this product in hardware stores
Stat 5411 - Analysis of Variance (Fall 2013)
Homework 1 Solution
1.
This is an observational study.
There is no active intervention on shoppers from the student. The student simply
interviewed and o
Stat 5411 - Analysis of Variance (Fall 2013)
Homework 4 Solution
1.
(a) F0.05,df1 =4,df2 =13 = 3.18 (on page 1185).
(b) F0.01,df1 =10,df2 =90 = 2.52 (on page 1191).
(c) The value of F such that Pr(Fdf
Stat 5411 - Analysis of Variance (Fall 2013)
Homework 5 Solution
1. The standard CI is z/2 (1n ) = 0.10 1.96 (0.10)(0.90) = (0.0412, 0.1588).
100
In WAC CI, y = y + 2 = 12, n = n + 4 = 104, and = y
Stat 5411 - Analysis of Variance (Fall 2013)
Homework 6 Solution
1.
(a) H0 : all incentive plan yield equal productivity versus Ha : at least one incentive plan
yields diering productivity.
(b) The p-
Stat 5411 - Analysis of Variance (Fall 2013)
Homework 7 Solution
1.
(a) Assign the numbers 1, 2, 3, 4, 5 to the plots on each farm. Separately for each farm,
obtain a random ordering of the numbers 1,
Name _
Stat 5411
Fall 2012
Exam 1
In problems where you need to choose form numbered choices, you can just circle your choice and then briefly
explain why.
For some questions you may leave answers as
Stat 5411
Fall 2012
Exam 1
Answers
(1) (a) The biggest problem is that there is no replication. We don't have replicate measurements under the same
treatment conditions which would allow us to see how
Name _
Stat 5411
Fall 2012
Exam 2
For some questions you may leave answers as unsimplified numerical expressions. The expressions
could include mathematical notation such as
, Log10(45) , 102.07 etc.