BIOST 511
Practice Midterm Exam
Name: _
1) (5 pt) The median is (circle all that apply)
a)
b)
c)
d)
always less than the mean
the average of the observations
1.5 times the interquartile range
the value above which 50% of the observations occur
2) (5 pt) W

BIOST 511
1.
Assignment 10
Solutions
Watch the recording for non-parametric statistics (course website, Lectures link) and answer the
questions (true or false). If your response is false, provide a brief summary explaining why.
a.
The non-parametric sign

Probability Distributions
General concepts
1. Random variable
2. Parameters
3. Mean, variance of a random variable
Bernoulli/Binomial
1. Gives probability of k 1s in n (independent ) trials for a binary (0/1) random
variable
Poisson
1. Gives probabilit

Psychologically
Healthy
Workplace
Tracy Warren
Faculty: Cathy Rodgers, PhD
08/29 /15
Psychologically Healthy
Workplace
What is a psychologically healthy workplace?
A psychologically healthy workplace is when a individual goes to a
working environment that

Due date: Thu, Mar 3rd, 11:59 pm
CHEM 267 QUIZ #6
1. Indicate which of the following compounds would be named, according to the IUPAC rules of
nomenclature, as a substituted ester. Check all that apply.
O
O
O
N
O
O
O
O
O
O
O
HO
H
O
O
i
O
iii
ii
CN
O
c i
c

Due date: Thu, Jan 21st, 11:59 pm
CHEM 267 QUIZ #2
1. What is the IUPAC name for the following compound?
c 3-chloro-4-bromophenol
c 1-bromo-2-chlorophenol
OH
c 4-bromo-3-chlorophenol
c m-chloro-p-bromophenol
Cl
Br
c 4-bromo-5-chlorophenol
2. For the follo

Due date: Thu, Jan 28th, 11:59 pm
CHEM 267 QUIZ #3
1. Which of the following pairs of reagents would be capable of effecting a Friedel-Crafts alkylation
reaction with benzene? Check all that apply.
OH
A.
, H2SO4
B. CH2=CHCl, AlCl3
C. CH2=CHCH3, H2SO4
D. P

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Home / Science & Nature / Science / Biology / Difference Between Nerve and Neuron

Due date: Thu, Jan 14th, 11:59 pm
CHEM 267 QUIZ #1
1. Which of the following compounds are conjugated dienes? Check all that apply.
c 4-methyl-1,3-heptadiene
c 3-methyl-1,5-heptadiene
c 2-methyl-2,4-heptadiene
c 4-methyl-1,4-heptadiene
c 5-methyl-2,3-hept

BIOST 511
Midterm Exam III
Solutions
Name _KEY_
Problems are worth 5 points. For multiple choice and true/false questions, select one response.
1) A 95% confidence interval for the population mean
o
o
o
o
o
excludes the sample mean with 95% probability
in

BIOST 511
Midterm Exam III
November 22, 2013
Name _
Problems are worth 5 points. For multiple choice and true/false questions, select one response.
1) A 95% confidence interval for the population mean
o
o
o
o
o
excludes the sample mean with 95% probabilit

BIOST 511
1.
Activity 18 Categorical Data III
Solutions
A 1980 study investigated the relationship between the use of oral contraceptives and the development
of endometrial cancer. It was found that of 117 endometrial cancer patients, 6 had used oral
cont

BIOST 511
1.
Activity 16 Non-parametric Tests and Categorical Data I
Solutions
Much attention has been given in recent years to the role of transcendental meditation in improving
health, particularly in lowering blood pressure. One hypothesis that emerges

BIOST 511
1.
Activity 17 Categorical Data II
Solutions
In a psychology experiment, a group of 30 people were randomized to either receive some painful
electric shocks or they would be subjected to some painless electric shocks. The subjects were given
the

BIOST 511
1.
Sample Size and Power
Solutions
The power of a test is the probability of
a) accepting a true null hypothesis
b) rejecting a true null hypothesis
c) accepting a false null hypothesis
d) rejecting a false null hypothesis
2.
The power of a stat

BIOST 511
Final Exam
Dec. 12, 2012
Name _KEY_
1. The Cardiovascular Health Study (CHS) is a population-based, longitudinal study of coronary heart
disease (CHD) and stroke in people aged 65 years and older. The CHS enrolled a total of 5888 elderly men
and

Due date: Thu, Feb 4th, 11:59 pm
CHEM 267 QUIZ #4
1. Which of the compounds shown would be a significant product of the following reaction? Check all
that apply.
CF3
HNO3, H2SO4
?
CH3
CF3
CF3
CF3
CF3
O2N
NO2
CH3
O2N
i
CH3
CH3
NO2
iii
ii
CF3
CH3
iv
CF3
CF3

Due date: Thu, Feb 25th, 11:59 pm
CHEM 267 QUIZ #5
1. Indicate which of the following reaction sequences will yield the products shown in good yield.
Check all that apply.
N
Cl
Cl
(i)
Cl
1. HNO3, H2SO4
2. HN(CH3)2
NO2
N
Cl
1. HNO3, H2SO4
(ii)
2. HN(CH3)2

Howard Gardner
My Way
utobiographers have numerous choices. It is not difficult for anyone so
approached to conjure up a number of stories. One can give an account
of Pilgrims Progress, where steady work and virtuous behavior are ultimately rewarded. One

Date:
Time:
8/25/2015
10:11:23AM
Page 1 of 1
Active Application
District: Cabarrus County Schools
Application Date:
Last Name
WARREN
First Name
TRACY
SSN
XXX-XX-3483
Family Size
6
32,796.00
Total Annual Income:
Head of Household Information
Family Number

PROBATION LENGTH AND TEACHER SALARIES:
DOES WAITING PAY OFF?
ERIC J. BRUNNER AND JENNIFER IMAZEKI*
T
Tenure policies for elementary and secondary school teachers is a
controversial issue in many states, but there is virtually no empirical evidence
on how

Psychology's growth careers
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day, 19 February 2013 05:37
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Chapter Seven
Problem 1)

@
com be obtculeol S m
fig W menP-a 11mm
'T m
We the vectors
u ye", h
0
6).: (z,
I _
a L ).ntl~thL\ (Pm-try efwvwbm't
.7 M
hwclb em , 3 Oct/(e661 or). cfw_3642
Th2): L7 @
W I? \s the standanl matrix oLsSom'afed
w cfw_fl/x T,
whefLer a map [A cfw_S Unto.

Suppose that A, B and C are square matrices, and that CA = B. Then C is
given by
(a) A1 B
(b) BA1
(c) AB1
(d) B1 A
()
1/2
Suppose that A, B, and C are n n invertible matrices, and that
C1 (A + X)B1 = In . Then the matrix X is given by
(a) BC A
(b) B1 C1 A

When two linear transformations are performed one after another, the
combined effect will always be a linear transformation.
(a) True
(b) False
()
1/5
Let S : Rp Rn and T : Rn Rm be linear transformations. Then another
valid linear transformation is
(a) T

Consider the triangular matrix
a11
A= 0
0
a12
a22
0
a13
a23 ,
a33
so that
a11
0
A I =
0
a12
a22
0
a13
a23 .
a33
Then the eigenvalues of A are given by = a11 , = a22 , and = a33 .
(a) True
(b) False
()
1/3
Suppose that A is an n n matrix that has n dis

[Participation points only] Let R22 denote the space of all possible 2 2
matrices. The zero element is the zero matrix
0 0
.
0 0
Then the set of all diagonal matrices
a 0
,
0 b
a R, b R,
is a subspace of R22 .
(a) True
(b) False
()
1/3
[Participation poin

[Participation points only] Suppose that A is a 4 6 matrix and that
dim Nul A = 2. Then Col A = R4 .
(a) True
(b) False
()
1/3
Suppose that A is a 10 9 matrix and has 6 pivot columns. Then
(a) Col A = R6 .
(b) dim Col A = 6
(c) any basis of Col A consists

[Participation points only] Let R22 denote the space of all possible 2 2
matrices. The zero element is the zero matrix
0 0
.
0 0
Then the set of all singular (non-invertible) matrices is a subspace of R22 .
(a) True
(b) False
()
1/5
Let U be the matrix th

An n n matrix is invertible if its columns are linearly independent.
(a) True
(b) False
()
1/3
An n n matrix is invertible if its rows are linearly independent.
(a) True
(b) False
()
2/3
The following matrix is invertible:
1
A= 2
3
3 2
5 7
6 3
(a) True
(

A is a 4 4 matrix with three distinct eigenvalues. One eigenspace is
one-dimensional, and one of the other eigenspaces is two-dimensional. Is it
possible that A is not diagonalizable?
(a) Yes
(b) No
()
1/2
The eigenspace corresponding to eigenvalue of the

When the sizes of the matrices A, B, and C are such that the product ABC is
defined, then (ABC)T is equal to
(a) AT CT BT
(b) BT AT CT
(c) CT BT AT
(d) CT AT BT
(e) all of the above are equal
()
1/1