Solutions for Homework 4
Note: Some of the problems may not be exactly the same as in the text book.
4.4. Three different washing solutions are being compared to study their effectiveness in
retardingbacteriagrowthinfivegallonmilkcontainers.Theanalysisis
Homework 7 Solutions
7.1
ConsidertheexperimentdescribedinProblem6.1. Analyzethisexperimentassumingthateach
replicaterepresentsablockofasingleproductionshift.
N or ma l Pl ot of t he St a nda r di ze dEf f e ct s
( r esponseisReponse, Alpha= 0.05)
99
Effe
STAT 503, Fall 2005
Homework Solution 6
Due: Nov. 3, 2005
6-1 An engineer is interested in the effects of cutting speed (A), tool geometry (B), and cutting angle on
the life (in hours) of a machine tool. Two levels of each factor are chosen, and three rep
Homework 1 Solution
Problem 1.2.
SUPPOSE THAT YOU WANT TO INVESTIGATE THE FACTORS THAT POTENTIALLY AFFECT COOKING RICE.
(A) WHAT WOULD YOU USE AS A RESPONSE VARIABLE IN THIS EXPERIMENT? HOW WOULD YOU MEASURE THE
RESPONSE?
I would use the taste of rice as
Homework 3 Solutions
Note: Some of the problems may not be exactly the same as in the text book.
3.7 (3.5 in 7th ed). The tensile strength of Portland cement is being studied. Four different
mixing techniques can be used economically. The following data h
Chapter 6
k
The 2 Factorial Design
Solutions
6.1
An engineer is interested in the effects of cutting speed ( A), tool geometry (B), and cutting angle on the life
(in hours) of a machine tool. Two levels of each factor are chosen, and three replicates of a
STAT 503, Fall 2005
Homework Solution 6
Due: Nov. 3, 2005
6-1 An engineer is interested in the effects of cutting speed (A), tool geometry (B),
and cutting angle on the life (in hours) of a machine tool. Two levels of each factor
are chosen, and three rep
STAT 503, Fall 2005
Homework Solution 4
Due: Oct. 6, 2005
4-Problems from Cochran & Cox
Review the handout with the analysis of the data in Cochran &
Cox on p. 135. Compare the output from the Minitab analysis and show how this corresponds to the
Analysis
STAT 503, Fall 2005
Homework Solution 5
Due: Oct. 18, 2005
5-1 The yield of a chemical process is being studied. The two most important variables are thought to be
the pressure and the temperature. Three levels of each factor are selected, and a factorial
STAT 503, Fall 2005
Homework Solution 7
Due: Nov. 8, 2005
6-18 Consider a variation of the bottle filling experiment from Example 5-3. Suppose that only two levels
of carbonation are used so that the experiment is a 2 3 factorial design with two replicate
STAT 503, Fall 2005
Homework Solution 9
Due: Dec. 8, 2005
9-3 An experiment was performed to study the effect of three different types of 32-ounce bottles (A) and
three different shelf types (B) - smooth permanent shelves, end-aisle displays with grilled
STAT 503, Fall 2005
Homework Solution 8
Due: Nov. 15, 2005
7-10 Consider the fill height deviation experiment in Problem 6-18. Suppose that each replicate was run
on a separate day. Analyze the data assuming that the days are blocks.
Minitab output is on
Hint for solving 7-19 using DOE -> Factorial or GLM
Using DOE -> Factorial
Use the Stat -> DOE -> Factorial menu and generate the default design for 3
replicates arranged in 6 blocks. Remember to not randomize the order of the
runs to keep the arrangement
World Campus Stat 503
Exam 1
Available: October 5 7, 2012 Name:
Date/Time begin: Date/Time end:
This exam is open book and notes, and you have 2 hours to complete and upload it to Angel. It
should take about 1 - 1.5 hours to complete. The extra time is
STAT 503, Fall 2005
Homework Solution 2
Due: Sept. 15, 2005
3-1 The tensile strength of portland cement is being studied. Four different mixing techniques can be
used economically. The following data have been collected:
Mixing
Technique
1
2
3
4
3129
3200