Name
MthSc 302 Quiz 4
One is interested in modeling the output of an electronic component as a function of the
relative humidity. Observations were taken at six relative humidities, and the coded data are
given below.
Relative
Humidity Output
2
2
1
1
0
0
Name
MthSc 302 Quiz 4
One is interested in modeling the output of an electronic component as a function of the
relative humidity. Observations were taken at ve relative humidities, and the data are given
below.
Relative
Humidity Output
10
3
20
7
30
13
40
Name
MthSc 302 Quiz 5
The number of people entering a particular coee shop is never more than one in any small
time interval, and on the average the rate is two people per minute.
1. What is the probability that at least two people arrive in a 5 minute pe
Name
MthSc 302 Quiz 5
The number of people entering a particular coee shop is never more than one in any small
time interval, and on the average the rate is two people per minute.
1. What is the probability that no more than one person arrives in a 5 minu
Name
MthSc 302 Quiz 6
Electrical insulation was tested by subjecting it to continuously increasing voltage stress.
The resulting failure times (in minutes) were:
219.3
79.4
86.0
150.2
21.7
1. Assuming the failure times are exponentially distributed, write
Name
MthSc 302 Quiz 6
Given below are data on the diameters of steel ball bearings from a particular production
process.
1.72
1.62
1.69
0.79
1.79
0.77
1. Construct a normal probability plot for these values.
i
1
2
3
4
5
6
x(i) pi
Q(pi )
0.77 0.0833 1.38
0
Peter Mebane
MATH 3020 Summer 1
Exam 1
Problem 1
a)
The sample mean is 5421.77
The variance is 1117.977
The standard deviation is 33.43616
b)
This is a stem-and-leaf diagr
Peter Mebane
Summer I
MATH 3020
Exam 3
Problem 1)
a)
i)
The parameter of interest is the mean. In the context of this problem, we will test to
investigate if the true population
Problem 3)
a)
x=cfw_"# of chipped blocks in a sample"
x- Binomial (n=30, p=.05)
i)
The probability of observing 4 or more chipped blocks is .061.
ii)
The inspector should
Name
MthSc 302 - Quiz 3
The density of bricks is to be studied to see how it is eected by the grain size
and the pressure used in the process. Three grain sizes and two pressures
were used and n = 3 observations were taken at each grain size/pressure
comb
Name
MthSc 302 - Quiz 2
A 2 3 factorial experiment was run to study the eect of a water bath
on the nal products moisture content. The two factors studied were the
temperature of the water bath and the rate at which the product moved
through the water bat
32% %
MthSc 302 Exam 2A Name: .___m,--.,r_1 ___________ ,,
Directions: Answer the following questions by showing your work iegibiy and logically.
Show all work on the test to receive possible partial credit. You may use an 8 X 11.5 formula
sheet and a c
MthSc 302 Exam 1
1. An experiment was conducted to study the eects of type of ignition system (factor A) and
timing level (factor B) on the percentage of smoke emitted by a particular type of engine.
Two types of ignition systems and three timing levels w
MthSc 302 Exam 1
1. An experiment was conducted to study the eects of type of ignition system (factor A) and
timing level (factor B) on the percentage of smoke emitted by a particular type of engine.
Two types of ignition systems and three timing levels w