BST 322
Week 1 Assignment
1.
For each of the following (a through d), indicate which is a variable and which is a constant:
a.
The number of minutes in an hour. (Constant)
b.
Systolic blood pressure. (Variable)
c.
Blood type. (Constant (A persons blood ty
Week 1 Assignment
1.
For each of the following (a through d), indicate which is a variable and which is a constant:
a.
The number of minutes in an hour. Constant
b.
Systolic blood pressure. Variable
c.
Blood type. Variable
d.
The number of days in a week.
WEEK 2. DISSCUSSION 2
Two sample T hypothesis test:
1 : Mean of REST
2 : Mean of ACUPUNTURE
1 - 2 : Difference between two means
H0 : 1 - 2 = 0
HA : 1 - 2 0
(with pooled variances)
Hypothesis test results:
DifferenceSample Diff. Std. Err. DF T-Stat P-valu
Week 4 Assignment
1.
For each correlation coefficient below, calculate what proportion of variance is shared by
the two correlated variables:
a.
b.
c.
d.
2.
(0.25)(0.25)= 0.0625
(0.33)(0.33)= 0.1089
(0.90)(0.90)= 0.81
(0.14)(0.14)= 0.1096
For each coeffic
Contingency table results:
Rows: var3
Columns: None
Cell format
Count
(Row percent)
(Column percent)
(Percent of total)
(Expected count)
Trouble
Boys
Girls
Total
Got in Trouble count
% of trouble
% of girls and boys
% total
expected count
46
(55.42%)
(39.
bl a rkh Da rd .co m
MyStatLab Resourcu
Week One
Week Two
Week Three
Week Four
Course Resources
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My Progress
Blackboard Support Portal
National Unwersity Support
Discusslon Board
Library Resources
Math and Wl'lllllg Centers
Suhrn _
(
l
Q
1.
What is the probability of rolling a four in the gambling dice game of craps (given two sixsided dice)? 3/36 or 8.33%. What is the probability that a player can roll four 3 times in a row
(assume that rolling the dice each time does not affect the outc
1. a. constant
b. variable
c. variable
d. constant
Independent Variable
Dependent Variable
2. a. Does a persons age affect psychological adjustment following burn
injury?
b. How do physically handicapped children differ from nonhandicapped children with r
Work Now
Poverty Status
No
Yes
Total
Below poverty
% within poverty status
% within Work Now
% of Total
446
66.87%
90.47%
49.94%
221
667
33.13%
100%
55.25% 74.69%
24.75% 74.69%
Above poverty
% within Poverty Status
% within Work Now
% of Total
47
20.8%
9.
1. State the null and alternative hypothesis.
H0- There is no difference in optimism between women in poor urban settings and women
nationally.
H1- There is a difference in optimism between women in poor urban settings and women
nationally.
2. What is the
1. State the null and alternative hypothesis.
H0- There is no difference between rest and acupuncture.
H1- There will be a difference between rest and acupuncture. (Two-tailed)
2. What is the value of t for the analysis?
Two sample T hypothesis test:
1 :
I have carefully studied my instructors written homework suggestions for this weeks homework.
BST 322 Week 2 Assignment
What is the probability of rolling a four in the gambling dice game of craps (given two six sided
dice)?
1.
The probability of rolling
Week 1 Assignment
1.
For each of the following (a through d), indicate which is a variable and which is a constant:
a.
The number of minutes in an hour. - Constant
b.
Systolic blood pressure - Variable
c.
Blood type - Constant
d.
The number of days in a w
1. Construct a Frequency distribution of a variable and a bar graph from the same variable.
A frequency distribution is a systematic arrangement of data values from lowest to the highest. It
is also a simple and effective way to impose order on a data.
Fr
Discussion Question 1 Week 3
Now that we are more familiar with StatCrunch and making cross-tabulation tables, discuss how the textbook author (Dr. Polit) created Figure 8.2 (the cross tabulation table on
p. 174). Can you get the data into StatCrunch and
DQ2 Week 3
Question 2 - Calculate the Chi-Square using StatCrunch
For this second question - let's try to make a crosstabulation table for a problem we don't have in the
textbook. We want to know whether boys or girls get into trouble more often in school
DQ2 Week 4
Given the data presented in Discussion Question 1 for this week, determine the cholesterol level
of someone who drank two and a half cups of coffee a day. To get the answer, plot a regression
line in StatCrunch and post your answers from StatCr
Week 4 Discussion 1
Q1 Correlation between coffee and cholesterol
A study from a Colombian research center is about to publish a pilot study regarding a new coffee plant that they believe can reduce total cholesterol in humans. They gave increasing doses
Discussion Question 1 Week 2
Question 1: One sample test on optimism
Are a certain sampled population of women in a poor urban setting as optimistic as women nationally?
Click the link below to download Week 2 Discussion Question 1. The data contained was
Week 4 Assignment
1.
For each correlation coefficient below, calculate what proportion of variance is shared by the two correlated variables:
a.
b.
c.
d.
2.
For each coefficient of determination below, calculate the value of the correlation coefficient:
a
Discussion Question 2 Week 2
Two sample T hypothesis test:
1 : Mean of Rest
2 : Mean of Acupuncture
1 - 2 : Difference between two means
H0 : 1 - 2 = 0
HA : 1 - 2 0
(with pooled variances)
Hypothesis test results:
Difference
1 - 2
Sample Diff.
0.91666667
Review Test Submission: Week One Quiz
Content
User
Course
Test
Started
Submitted
Status
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Time Elapsed
Instructions
Britney Tarpley
BST322 Intro to Biomedical Statistics
Week One Quiz
10/30/16 1:25 PM
10/30/16 2:07 PM
Completed
17 out of 20 po
Status
Completed
Attempt Score 20 out of 20 points
Time Elapsed 20 minutes out of 2 hours
Instructions
Please answer each question below and click Submit when you have
completed the Quiz.
Results
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Submitted Answers, Correct Answers, Feedback
fals
Week 4 Assignment September 2016
1.
For each correlation coefficient below, calculate what proportion of variance is
shared by the two correlated variables:
a.
b.
c.
d.
2.
For each coefficient of determination below, calculate the value of the correlation