Stat 224/324
November 20, 2015
Assignment #10 Due Friday, 12/4, by 4pm
*Submit your homework to RHONDA BACHERs mailbox anytime prior to the due date/time. The mailboxes
are to the left as you enter the Medical Science Center (1300 University Ave.) from th
Statistics 324
Sept. 23, 2015
Assignment #2 Due Friday, October 2, by 4pm
*Submit your homework to Donggyu Kims mailbox any time prior to the due date/time. The mailboxes are
to the left as you enter the Medical Science Center (1300 University Ave.) from
Stat 224/324
October 21, 2015
Assignment #5 Due Friday, October 30, by 4pm
*Submit your homework to Rhonda Bachers mailbox anytime prior to the due date/time. The mailboxes are
to the left as you enter the Medical Science Center (1300 University Ave.) fro
Stat 224/324
Assignment #1 Solutions
1. Spider Data
(a) One possible histogram is below:
3
0
1
2
Frequency
4
5
6
Histogram of Spider Speeds
1.0
1.5
2.0
2.5
3.0
3.5
cm/s
R code to create this might look like:
#enter data#
speeds <- c(1.25, 1.64, 1.91, 2.31
Data Analysis Course
Multiple Independent Populations - Summary
Draft: June 2, 2015
Comparing Multiple Independent Populations - Summary
1. ANOVA
If we have samples from more than two treatments, and wish to test:
H0 : 1 = 2 = 3 = 4
vs.
HA : At least one
Stat 324
October 28, 2015
Assignment #7 Due Friday, November 6, by 4pm
*Submit your homework to RHONDA BACHERs mailbox anytime prior to the due date/time. The mailboxes
are to the left as you enter the Medical Science Center (1300 University Ave.) from th
Stat 224/324
December 2, 2015
Assignment #11 Due Friday, Dec. 11, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from the main
Assignment #3 Solutions
*Submit your homework to your Support TAs mailbox anytime prior to the due data/time. The mailboxes
are to the left as you enter the Medical Science Center (1300 University Ave.) from the main University Ave.
entrance.
*No late hom
Stat 224/324
Oct. 14, 2015
Assignment #5 Due Friday, Oct. 23, by 4pm to RHONDA BACHERs mailbox in MEDICAL
SCIENCES CENTER
*The mailboxes are to the left as you enter the Medical Science Center (1300 University Ave.) from the main
University Ave. entrance.
STAT 224 & 324
September 30, 2015
Assignment #3 Due Friday, October 9, by 4pm
*Submit your homework to Donggyu Kims mailbox anytime prior to the due date/time. The mailboxes are
to the left as you enter the Medical Science Center (1300 University Ave.) fr
Stat 224 and 324
Sept. 20, 2015
Assignment #2 Solutions
1. Lawn Care.
(a) Since the workability of each mower is independent, we multiply the probabilities: 0.1 0.2 = 0.02.
(b) The probability that Mower 1 is working can be calculated as 1 0.1 = 0.9. Simi
Stat 224/324
November 13, 2015
Assignment #8 Due Friday, November 13, by 4pm
*Submit your homework to your TA mailbox anytime prior to the due date/time. The mailboxes are to the
left as you enter the Medical Science Center (1300 University Ave.) from the
Stat 324
Keuler
March 5, 2015
Assignment #4 Due Friday, March 13, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from the main
Stat 324
Keuler
March 12, 2015
Assignment #5 Due Friday, March 20, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from the mai
HW 7 Fracture and Mechanical Strength of Polymers
CBE 440; DUE Thursday March 26th at 9:30 AM
Study Chapter 8 and 15
1.
A cylindrical rod of copper originally 16.0 mm (0.625 in.) in diameter is to be cold worked by drawing; the
circular cross section will
Stat 324
Keuler
March 20, 2015
Assignment #5 Solutions
1. P-values and Power.
(a) From this data, tobs =
14.212
4.88
10
= 1.425. Since the alternative is two sided, the p-value is P (t9 <
1.425)+P (t9 > 1.425). From the t-table using a value of 1.4, this
Stat 324
Keuler
February 5, 2015
Assignment #2 Due Friday, February 13, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from th
Stat 324
Keuler
April 23, 2015
Assignment #8 Due Friday, May 1, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from the main U
Stat 324
Keuler
February 20, 2015
Assignment #3 Solutions
1. Fahrenheit to Celsius.
(a) Standardizing and using the normal table, P (F 93.8) = P (Z
0.76) = 1 0.7764 = 0.2236.
(93.890)
)
5
= P (Z 0.76) = 1P (Z
(b) Using our rules of E and V AR, E(C) = (5
Stat 324
Keuler
February 6, 2015
Assignment #1 Solutions
1. Spider Data
(a) One possible histogram is below:
3
0
1
2
Frequency
4
5
6
Histogram of Spider Speeds
1.0
1.5
2.0
2.5
3.0
3.5
cm/s
R code to create this might look like:
#enter data#
speeds <- c(1.
Stat 324
Keuler
March 13, 2015
Assignment #4 Solutions
1. Bootstrap vs T Interval
(a) The QQ plot is below:
QQ Plot of Data
7
6
5
3
4
1
2
Sample Quantiles
1.5
1.0
0.5
0.0
0.5
1.0
1.5
Theoretical Quantiles
The plot is not very straight, so normality does n
Chemical Engineering 440: Structure and Properties of Engineering Materials
CBE 440 2016 HW 4
Due 2/19/15 in class
1. (60 pts) For the binary phases below look up the phase diagrams online. Report 1) the
phases that are present for the given composition,
Stat 324
Keuler
April 9, 2015
Assignment #6 Due Friday, April 17, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from the main
Stat 324
Keuler
February 12, 2015
Assignment #3 Due Friday, February 20, by 4pm
*Submit your homework to any TA mailbox anytime prior to the due date/time. The mailboxes are to the left
as you enter the Medical Science Center (1300 University Ave.) from t
Stat 224/324
October 23, 2016
Assignment #5 Solutions
1. (a) Since it is bad if the packages are either too heavy or too light, we need a two-sided alternative. If is
the population mean package weight, then our hypotheses might be:
H0 : = 8oz
HA : 6= 8oz
Stat 224/324
Feb. 22, 2016
Assignment #4 Solution
1. Confidence interval based on T distribution
(a) = 0.05 and t15,0.025 = 2.131. Then the 95% confidence interval is 11.8 2.131
[11.40, 12.20].
(b)
(2.575)2 (.75)2
.252
0.75
16
and we get
= 59.67 which is
2005 STAT 324 midterm 1 solution Moo K. Chung [email protected]
Grade distribution 29.65 6.18.
6
5
4
3
2
1
0
15
20
25
30
35
40
1. (a) Suppose that A and B are independent events such that the probability that
neither occurs is 1 and the probability of
STAT-324
Midterm I
February 22, 2005
9:30-10:40AM
Instructor: Moo K. Chung
Answer all questions showing all your work neatly.
Calculators are allowed. One page note is permitted
Name:
Student ID:
Pledge: On my honor, I have neither given nor received
unau
Stat324: Final Exam Solutions
Moo K. Chung
[email protected]
May 11, 2005
You may use the following R output for the answering exam problems.
> qnorm(c(0.005,0.01,0.025,0.05,0.1)
[1] -2.575829 -2.326348 -1.959964 -1.644854 -1.281552
> qt(0.025,5:11)
[1
STAT-324
Final Exam
May 11, 2005
12:25-2:25AM
Instructor: Moo K. Chung
Answer all questions showing all your work neatly.
Calculators are allowed. One page note is permitted
Name:
Student ID:
Pledge: On my honor, I have neither given nor received
unauthor