STAT 200 QUIZ 3
Section 6360 Fall 2016
I have completed this assignment myself, working independently and not consulting
anyone except the instructor.
NAME_Jessica Gallagher_
INSTRUCTIONS
The quiz is worth 40 points total.
The quiz covers Week 5 and 6 mat
STAT 200 QUIZ 2
Section 6360 Fall 2016
I have completed this assignment myself, working independently and not
consulting anyone except the instructor.
NAME_Jessica Gallagher_
INSTRUCTIONS
The quiz is worth 40 points total.
The quiz covers week 3 and week
Examining Distributions Checkpoint 1
Question 1
Select one answer.
10 points
This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to
successfully navigate a maze.
For the data described by the above histogram,
Quiz - 2
1. What is the probability of rolling a pair of dice and
a) obtaining a total score of 8?
b) obtaining a total score of 10 or more?
2. A box contains four black pieces of cloth, two striped pieces, and six dotted
pieces. A piece is selected rando
STAT 200 Final Examination
Spring 2017 OL1/US1
Page 1 of 10
STAT 200 Introduction to Statistics
Name_
Final Examination: Spring 2017 OL1/US1
Instructor _
Answer Sheet
Instructions:
This is an open-book exam. You may refer to your text and other course mat
STAT200 QUIZ-3
1. Consider a trial where a person is charged with a crime.
The Null Hypothesis is that the defendant is not guilty.
Identify following verdicts as Type I or Type II Errors:
a) Person committed crime, b court failed to prove it and found hi
STAT200 Week 7
Homework
This is the last homework in our class
Problem 1. For the X,Y data in the table, compute the coefficient of correlation r.
X
Y
10
21
12
27
14
25
16
31
20
32
Show work
Problem 2. For the (X, Y) data in the table, compute slope and y
There are two techniques in Hypothesis testing:
1) using critical/rejection region
2) using p-value
Here are basic steps for each technique.
Establish Null and Alternative Hypothesis, Ho and Ha.
If Ha has sign less then we have Left-Tailed test.
If Ha has
UNIVERSITY OF MARYLAND UNIVERSITY COLLEGE ADELPHI SYLLABUS
STAT 200 7360 INTRODUCTION TO STATISTICS
(2172) STAT-200
Spring 2017
Section 7360
3 Credits
02/20/2017 to 04/16/2017
Faculty Contact
Jing Gao [email protected]
Course Description
Prerequi
UMUC STAT-200 Homework Assignments
Dr. Brian Killough
Week #2 - SOLUTIONS
Lane - Chapter 2: 7,9 and Chapter 3: 6,8,30,31
sh is
ar stu
ed d
vi y re
aC s
o
ou urc
rs e
eH w
er as
o.
co
m
7.
Eye Color
Students
Brown
Blue
Green
Gray
11
10
4
1
Total = 26
Relat
Question 1. If you perform Hypothesis Testing with alpha level of 0.01
What is the probability that true null hypothesis will be accepted?
Question 2. True or False:
It is easier to reject the null hypothesis if the researcher uses a smaller alpha () leve
STAT200
Week 4 Homework
For this HW you should use Appendix Table for Normal Distribution
Student
n
p
Acopan
Ambol
Anderson
Attai
Broseker
Buchheit
Bullock
Caywood
CoxEickhof
Fox
Gray
Hampton
60
55
57
59
61
63
65
67
69
71
73
75
77
10
12
14
16
18
20
22
24
STAT200 Quiz-1
covers material for week 1 and week 2.
Show steps of solutions, not just answers.
1. Describe how you would apply systematic sampling (a) and how you would apply
stratified sampling technique (b) to select a sample from the list of all comp
STAT 200: STAT 200
Book 1: Chapter 5
5. A fair coin is ipped 9 times. What is the probability of getting exactly 6 heads?
1/ (2^9) x (9/6)
2^9 = 512
(9 x 8 x 7) / (3 x 2 x 1) =84
84/512 = 0.1640625 x 100 = 16.4%
7. You ip a coin three times.
(a) What is t
Homework 5: STAT 200
Book 1: Chapter 10
4. Why is a 99% condence interval wider than a 95% condence interval? A 99% confidence
interval is wider simply, because it is 4% higher than 95% confidence interval. With 99%
confidence, there is only a 1% chance l
STAT 200: Homework 2
Book 1
7. For the data from the 1977 Stat. and Biom. 200 class for eye color, construct:
a. pie graph
Eye Color
Brown
Blue
Green
Gray
b. horizontal bar graph
Chart Title
Grey
Green
Blue
Brown
0
2
4
Eye Color
c. vertical bar graph
6
Pe
STAT 200: Homework 4
Book 1: Chapter 7
8. Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution
with a mean of 71 mph and a standard deviation of 8 mph.
a. The current speed limit is 65 mph. What is the proportion o
STAT 200: Homework 6
Book 1: Chapter 11
18. You choose an alpha level of .01 and then analyze your data.
a. What is the probability that you will make a Type I error given that the null hypothesis is true?
By definition in signicance testing, the error of
STAT 200 QUIZ 3
Instructor: Dr. Jing Gao
NAME_Michele Persinger_
Spring 2017
INSTRUCTIONS
The quiz is worth 80 points total.
The quiz covers week 6 materials.
The quiz has two portions:
Multiple Choice (8 problems, 32 points). Show work/explanation as
Week 7 Homework
Lane Chapter 14
2. The formula for a regression equation is Y=2X+9.
a. What would be the predicted score for a person scoring 6 on X? X=2x6+9=21
b. If someones predicted score was 14, what was this persons score on X?
Y=2X+9
14=2X+9
X=(14-
STAT 200 QUIZ 1
Instructor: Dr. Jing Gao
NAME_
Spring 2017
INSTRUCTIONS
The quiz is worth 40 points total.
The quiz covers week 1 and week 2 materials.
The quiz has two portions:
Multiple Choice (8 problems, 16 points). Show work/explanation as appropr
Name: Briana Saul
Exam 1
Congratulations. You have just been hired as the new CEO for Handback Industries.
You were excited until you started and within first the few days, the director of HR
came into your office and indicated that the employees were thr
STAT 200 Final Examination
Summer 2016 OL1/US1
Page 1 of 15
STAT 200 Introduction to Statistics
Name_Briana Saul_
Final Examination: Summer 2016 OL1/US1
Instructor _Dr. Davis, Roger_
Answer Sheet
Instructions:
This is an open-book exam. You may refer to y
Name: Briana Saul
Homework #3
1)
2)
3)
4)
5)
6)
7)
8)
9)
Between a z-score of .25 and the mean
Between a z-score of 1.25 and the mean
At or above a z-score of 1.25
At or below a z-score of 1.25
At or below a z-score of -1.50
At or above a z-score of -1.75
355. 1:10 E : 1]
r EC;
(0 . @11qu (i 1", :1 1: W
:5 cfw_J 15,
.aaaaaabta
ANSWER: .qu0\ La 32a
TYPE: Fl DIFFICULTY: Moderate
KEYWORDS: sampling distribution, mean, probability,
central limit theorem
2. The amount of bleach a machine pours into bottles has
ANSWER:
H fir-V331 ipounds
TYPE: PR DIFFICULTY: Moderate
KEYWORDS: normal distribution, value
7. The owner of a sh market determined that the average
weight for a catsh is 3.2 pounds with a standard deviation
of 0.8 pound. Assuming the weights of catsh ar
.W ,
.15"
ANSWER: 131311] 1 I
TYPE: TF DIFFICULTY: Easy
KEYWORDS: standardized normal distribution, probability
14. The amount of time necessary for assembly line workers
to complete a product is a normal random variable with a
mean of 15 minutes and a s
zes-
TYPE: PR DIFFICULTY: Easy
KEYWORDS: normal distribution, probability
9. Referring to Table 6-3, for a randomly chosen Monday,
what is the probability there will be between 280 and 360
column inches of classied advertisement? . 15 /.
me i an i W * Vs-
Opre.202.wb1
Fall 2016
Assignment one (chapter 6)
Name 1 llei Here
Direction: Please show work for non-multiple choice problems.
This assignment is worth 80 points. Each problem is worth 5
points. Correct answers without work shown may receive no
points b