STAT 211
EXAM 4 FORM A
SPRING 2004
The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient
temperature in (F) for that month. The past years usage and temperature are shown in the following table.
M
M3070 FALL 2003 Quiz 1 NAME: Problem 1. (10 points) In Figure 1 is given a stem-and-leaf plot of the number of homeruns hit by Barry Bonds over the past 17 baseball seasons. Some other usefull information is
17 17
xi = 613
i=1
and
i=1
x2 = 24997 . i
The d
Name:_Section:_
Quiz 12 (April 26, 2004 Monday)
Turn it in until 9 am (April, 27, 2004 Tuesday) only to blocker 447
Each question worth 9 pt. plus the bonus 11pt. with the total of 110 pt. for the quiz
Make sure to write your answers here. They will not b
M3070 FALL 2003 Quiz 2 NAME: Problem 1. There are three coins in a box. The first is a two-headed coin, the second is a fair coin (so the chance of "heads" is 1/2), and the third is biased so that the chance of "heads" is 3/4. When one of the coins is ran
Name:_Section:_
Answer Key for Quiz 10 (April 16, 2004 Friday in class)
Each question you are answering is 10 pt. plus the bonus 30pt. with the total of 110 pt. for the quiz
Make sure to write your answers here. They will not be graded if they are anywher
Name:_Section:_
Answer Key for Quiz 11 (April 21, 2004 Wednesday in class)
Each question you are answering is 11 pt. plus the bonus 12pt. with the total of 100 pt. for the quiz
Make sure to write your answers here. They will not be graded if they are anyw
Quiz 5 Math 3070 Fall 2003 Name: Problem 1. Suppose that the pair of random variables (X, Y ) has joint probability density function given by f (x, y) =
2 2 ). 3
1 0
if x2 + y 2 1 , if x2 + y 2 > 1 .
(a) Compute P (X 2 + Y 2 >
(b) Find the marginal proba
TEST 2 M3070 Fall 2003 Show all work. Name: Problem 1. Suppose that the eggs in a carton are broken independently of each other, and denote by p the probability that a given egg is broken. A carton holds 12 eggs. How small should p be so that the probabil
TEST 1 M3070 Fall 2003 Show all work. Name: Problem 1. (10 points) Below are the daily high temperatures, in degrees Fahrenheit, for Salt Lake City during July 2003 (31 days). The decimal point is 1 digit(s) to the right of the | 8 9 9 10 10 | | | | | 7 1
Test 3 Math 3070 Fall 2003 Name: SHOW ALL YOUR WORK. Problem 1. A temperature reading is normally distributed with mean , the actual temperature, and standard deviation . What would the value of have to be ensure that 95% of all readings are within 0.1 de
Test 4 Math 3070 Fall 2003 Name: SHOW ALL YOUR WORK. Value Problem 1 Problem 2 Problem 3 Problem 4 Problem 5 Problem 6 Total 9 7 7 8 9 10 50 Score
1
Problem 1 (9 points). Let X1 , X2 be a random sample of size 2, from a distribution with mean and variance
An Aggie does not lie, cheat, or steal or tolerate those who do.
STAT 211
EXAM 1 FORM A
SPRING 2005
Consider a family with a mother, father, and two children. Let
A1=cfw_mother has influenza,
A2=cfw_father has influenza,
A3=cfw_first child has influenza,
STAT 211
EXAM 1 FORM A
SPRING2004
Future recognition from surface models of complicated parts is becoming increasingly important in the development
of efficient computer-aided design (CAD) systems. The following is the number edges of a part and the recog
Your first and last name:_ SSN:_
STAT 211
SPRING 2003
EXAM 1 - FORM A
You have 50 minutes to complete this exam. There are 20 questions (100 pts. total) and there is no
partial credit on this exam.
You can only use your own calculator. There is penalty of
STAT211
EXAM 2 FORM A
FALL03
Suppose the company producing the turf grass takes a sample of 20 seeds on a regular basis to monitor the quality of
seeds. The germination rate stays constant at 85%. Notice that X: number of seeds which will germinate, is
Bi
Exam 1
Fall02
Last year the proportion of female applicants who received financial aid was greater than the proportion of
male applicants who received financial aid. The graduate student council decides to determine if this
situation has been true for the
Your first and last name:_ SSN:_
STAT 211
SPRING 2002
You have 50 minutes to complete this exam. You can use your own calculator only. There is no partial
credit on this exam. If you did not mark your final answer on your scantron, your answer will be cou
STAT 211-200
EXAM 1 - FORM A
SUMMER03
The U.S. Census Bureau produces estimates of total resident population for each state on an annual basis.
The following table outlines it.
State
Births Deaths (birth-death) international internal
total
migration migra
Name :_Section:_
Answer Key for QUIZ 8 (Take home quiz due: Monday, 4/18/05 in class)
All the answers should be written here to be graded. Otherwise, they will not be graded.
1.
1
2.
0.4083
3. 1.0658
4.
0.3632
5.
99.8%
6.
2.81
7. 0.995
8. 2.88
9.
>0.10
10
Name:_Section:_
Quiz 9 (April 7, 2004 Wednesday in class)
Each question you are answering is 10 pt. plus the bonus 10 pt. with the total of 100 for this part
Make sure to write your answers here. They will not be graded if they are anywhere else .
2.
(b)
Department of Mathematics & Statistics
Stat 2593 Final Examination
25 April, 1997
TIME: 3 hours. Total Marks: 75. Indicate your answers clearly. Show all
work!
1. The symbols S 2, s2 , and 2 are all referred to as variance. Explain, briey, how 4 marks
the
Department of Mathematics & Statistics
STAT 2593 Final Examination
9 December, 1998
TIME: 3 hours. Total marks: 90.
SHOW ALL WORK!
1. In engineering, redundancy or backup is often built into a system to improve relia- 12 marks
bility. Suppose that a re al
Name:
Id No.:
Department of Mathematics & Statistics
STAT 2593 Section 1A McLean | 9:30 a.m.
Midterm Examination
October 19, 1998
TIME: 50 minutes. Total marks: 40. You are permitted to use your textbook, and one
8 & 1=2 11 crib sheet" of notes and formul
Department of Mathematics & Statistics
STAT 2593 Final Examination
13 December, 1999
TIME: 3 hours. Total marks: 100.
SHOW ALL WORK!
1. Metal machine parts are often subject to micro-cracks which are dicult to detect 15 marks
but make the part defective.
Name :_ANSWER KEY_Section:_
Quiz 1 (1/30/04 in class)
Efficient design of certain types of municipal waste incinerators requires the information about energy content of the
waste available. There is a paper published accompanying the data on Y: energy con
Name :_Answer Key_Section:_
Quiz 2 (February 4, 2005 in class)
Make sure to write your answers here. They will not be graded if they are anywhere else.
1.
(b)
2.
(b)
3.
(b)
4.
(b)
5. 0.30
6.
0.70
7.
0.90
8.
0.104
Consider a family with a mother, father, a
Name:_ ANSWER
KEY _Section:_
Make sure to write your answers here. They will not be graded if they are anywhere else .
1.
2/3=0.6667 2.
0
3. 7k/8=7/120.5833
4. 2k/3=4/9=0.4444
6.
0.0803
1
8. 0.75
9.
7.
0.95
5. 0.0803
10. 0
Quiz 3 (2/20/04 in class)
Let X
Name :_Section:_
Answer Key for Quiz 3 (given in class on February 18, 2005)
Make sure to write your answers here. They will not be graded if they are anywhere else.
1.
0.3
2.
0.1
3.
0.99
4.
0.03
5.
0.04
6.
4.57
7.
2.57
8.
1.2651
Expected number of flaws
Name :_Answer Key_Section:_
Quiz 1 (January 28, 2005 in class)
Make sure to write your answers here. They will not be graded if they are anywhere else.
1.
67.2
2.
76
3.
49
4.
84
5.
557.7
6.
35
7.
55
8.
-31.2 or -40
I have randomly chosen 5 students from t