Focus Exercise Chapter 21B
30.
A. The middle 95% of individual scores is 18+- (2)(6)=18+- 12=6 to30
B. The sample mean X of an SRS of 25 students has a normal distribution with
mean 18 and standard deviation 6/ 25 =1.2, so the middle 95% of sample
means 1
VIRGINIA COMMONWEALTH UNIVERSITY
Syllabus
Fall 2016
STAT 212-002, Concepts of Statistics
M, W, F- 9:00 -9:50 am
Room- MCALC 1102
Instructor:
Required Text:
Becky Durfee
Office: Room 4135 Harris Hall
Office Hours:
M and W: 10:00 10:50, Th: 11:00 12:15
Tele
Chapter 8
Stat 212,Fall 2014
Sampling Distribution of the sample mean
and sample proportion
Todays topics
Sampling distribution of the sample mean
Sampling distribution of the sample proportion
Practice problems( not to be turned in)
Statistical inference
SYLLABUS BIOZ 317 Ecology Lab Spring 2016
Instructor: Dr. Edward Crawford
Office: Room 125 LSCB
Phone: 828-9796
E-mail: ONLY email your assigned TA or Cynthia
Office hours: Check with your TA to find out when they will hold office hours
TAs:
Rick Ward
Cyn
Test 6 Practice Test 3
_
2.
1.
(4 points) What is the point estimate of the population mean ?
(A) 0
(B) Z
(C)
(D) t
(E) s
(8 points) In the current chapter covering statistical inferences on means, all of the procedures we have discussed
(sampling distrib
Test 6 Practice Test #2
_
1.
Which of the following is the point estimate of the population mean ?
(A)
(B)
(C)
(D) 0
(E) 1
2.
Americas Got Talent made an appearance at Richmonds Landmark Theater on Thursday, October 28, 2010.
Suppose the ages of people w
Test 6 Practice Test #1
Lymphoma is a cancer in the lymphatic cells of the immune system. Typically, lymphomas present as a solid tumor of
lymphoid cells. Treatment might involve chemotherapy and in some cases radiotherapy and/or bone marrow
transplantati
Test 4 Practice Test #1
For each of questions 1 through 3, indicate whether the statement is a correct comparison of the Z and t-distributions.
1.
The Z and all t-distributions have the same standard deviation.
The Z and all t-distributions have the same
STAT 210
Lecture 33
Confidence Intervals for m When s is
Unknown
April 7, 2014
Test 6
Monday, April 14
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter VIII, pages 189 230
Combination of multiple choice/fill in the blank questions
and problems/written qu
Test 4 Practice Test #2
1.
Suppose each of the following variables is known to have an approximate normal distribution. Which of these do
you feel will have a standard normal distribution?
(A) Grade on this test
(B) Weight of students taking this test
(C)
Test 4 Practice Test 3
_ and _
1.
A variable X has a normal distribution with mean 40 and standard deviation 5. Between what
two values (give two numbers) will the middle 68% of the distribution fall?
_
2. A variable X has a normal distribution with mean
Test 3 Practice Test #3
The Richmond Times-Dispatch provided an article on January 7, 2008 entitled Virginia's prison population forecast to
rise: To house estimated 6,700 more inmates by 2013, state builds, expands sites. The population consists of the 4
Test 3 Practice Test #2
VCU is hosting the Virginia Junior Academy of Science (VJAS) and Virginia Academy of Science (VAS) meetings on
May 26 29, 2009. The VJAS involves middle school and high school students presenting research projects in various
areas,
Test 2 Practice Test #2
The VCU Campus Connector is the bus service that allows students and employees to ride from one campus to the other
and to designated locations in between. During 2008 a VCU faculty member rode the VCU Campus Connector 11
times, an
Test 2 Practice Test #3
1.
Identify which of the following choices is the appropriate description of the statistic listed. It is possible to use a
choice more than once. Each part is worth 2 points, making the question worth 10 points total.
(A)
(B)
(C)
(
Test 3 Practice Test 1
During the week of October 2-8, 2011 the lawn area between Harris Hall and the Student Commons contains a display of
red flags. The Red Flag Campaign is a public awareness campaign designed to address dating violence and promote the
Test 2 Practice Test 1
_
1.
(4 points) To estimate the mean age of all students attending her university, a statistician selected a simple
random sample of 15 students. Prior to going on vacation, the statistician collected data for only 13 of the
15 stud
STAT 210
Lecture 40
Tests of Significance for 1 2 : Paired Data
Wednesday April 23 2014
Test 7
Friday April 25
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter X, pages 261 292, and concepts from
chapter VII
Combination of multiple choice/fill in the bla
STAT 210
Lecture 39
Tests of Significance for 1 2
Monday April 21 2014
Test 7
Wednesday, April 28
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter X, pages 261 292, and concepts from
chapter VII
Combination of multiple choice/fill in the blank questions
STAT 210
Lecture 34
Tests of Significance for Known
Wednesday April 9 2014
Test 6
Monday, April 14
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter VIII, pages 189 230 and concepts of chapter
VII
Combination of multiple choice/fill in the blank questions
STAT 210
Lecture 38
Confidence Intervals for 1 2
Friday April 18 2014
Practice Problems
Pages 286 through 291
Relevant problems: X.4 (a) and (c), X.5, X.6,
X.8 and X.10 (a)
Recommended problems: X.5 and X.6
Additional Reading and Examples
Read pages 281 t
STAT 210
Lecture 37
Sampling Distribution of X1 X2
Wednesday April 16 2014
Test 6 Results
Average = 68.17
90-100
80-89
70-79
60-69
<60
Median = 70.00
21 students
21 students
14 students
13 students
41 students
Included in the As were 5 scores of 100.
Prac
STAT 210
Lecture 26
Sampling Distributions of the
Sample Proportion p
March 21, 2014
Practice Problems
Pages 252 through 257
Relevant problems: IX.1 through IX.7
Recommended problems: IX.1, IX.3 and IX.7
Additional Reading and Examples
Read pages 248 thro
STAT 210
Lecture 32
Confidence Intervals for
WhenisKnown Friday April 4 2014
Practice Problems
Pages 220 through 230
Relevant problems: VIII.7 VIII.10, and
VIII.15 (a) and (b)
Recommended problems: VIII.8 and VIII.10
Additional Reading and Examples
Read p
STAT 210
Lecture 27
Confidence Intervals for Population Proportions
March 24, 2014
Practice Problems
Pages 252 through 257
Relevant problems: IX.8, IX.12 (a) and (b), IX.13,
IX.15 (a) and (b), IX.16, IX.17
and IX.18
Recommended problems: IX.13 and IX.18
A
STAT 210
Lecture 28
IX. Inferences on Population Proportions
March 26, 2014
Test 5
Monday, March 31
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter IX, pages 231 260 and relevant concepts
from chapter VII.
Combination of multiple choice/fill in the blan
STAT 210
Lecture 25
Tests of Significance
March 21, 2014
Practice Problems
Pages 187 and 188
Relevant problems: VII.4 and VII.5
Recommended problems: VII.4 and VII.5
Additional Reading and Examples
Read pages 185 and 186
Inference
Statistical inference in
STAT 210
Lecture 31
Sampling Distributions of the Sample Mean X
April 2, 2014
Test 5 Results
Average = 57.22
90-100
80-89
70-79
60-69
40-59
<40
9 students
18 students
15 students
17 students
22 students
35 students
Median = 61.00
Practice Problems
Pages 2
STAT 210
Lecture 29
Inferences on Population Proportions
March 28, 2014
Test 5
Monday, March 31
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter IX, pages 231 260, and concepts of chapter
VII.
Combination of multiple choice/fill in the blank questions
an