Nuha AL Fadhli
130028818
Week 5: One and Two-Sample Inference
Q1-Define null hypothesis ?
- A null hypothesis specifies a hypothesized real value, or values, for a parameter .
1. The null hypothesis is denoted by H0 the alternative hypothesis by H
and usu
Nuha AL Fadhli
130028818
[Introduction to Biostatistics] - [Biostatistical Design of Medical Studies ]
1
Assignment: 2-1
Compose a Word document that answers the following questions:
Why choose biostatistics over statistics for biomedical research?
Ther
Chapter 6
Diagnostic Testing
Diagnostic Testing
Clinical Reasoning
From the text, clinical decision making as described by
Sir William Osler in 1921
The problems of disease are more complicated and difficult than
any others with which the trained mind has
TEST RESULT
CONDITION
PRESENT
CONDITION ABSENT
POSITIVE
TRUE POSITIVE
FALSE POSITIVE
NEGATIVE
FALSE NEGATIVE
TRUE NEGATIVE
Practice Examples
Calculate infant mortality rate in
Massachusetts for 2000, providing there were
100 infant deaths for every 12000
GROEMC09_0132240017.qxd
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REVISED
Page 375
Chapter NINE
Introduction to
Hypothesis Testing
9.1
9.2
9.3
Hypothesis Tests for Means
Hypothesis Tests for Proportions
Type II Errors
CHAPTER OUTCOMES
After studying the material in Chapter 9, you
Biostatic
Midterm exam
Test 1
1) Define biostatistics
A. Application of mathematics to economics
B. A method to analyze scientific theories
C. Application for gene sequencing
D. A method to summarize and analyze data for various biological topics
2) How i
1
SALEM ALSUHAYMI 120008898
#1
Assignment
1) Why choose biostatistics over statistics for biomedical research?
Biostatistics allow identification of the specific statistical technique required to answer a
biological question.
2) Health scientists observe
1
Salem Alsuhaymi 120008898
Assignment #2
Dr. Goel
Hair color, gender and birthplace are all examples of (Qualitative Variables) variables.
A Geiger counter measures the number of particles emitted by a radioactive element in counts
per minute. Radioactiv
1
SALEM ALSUHAYMI 120008898
Assignment #3
1. The population of a clinical study of Americans with diabetes is considered to be the collection of blood
sugar levels of ALL Americans. The average blood sugar level for the population is called the (parameter
1
Salem Alsuhaymi 120008898
Assignment #13
Dr. Goel
1. Which is the best measure to estimate the proportion of the U.S. population
that is over weight?
B. Prevalence
2. Which is the best measure to estimate how fast new cases of acute myelogenous
leukemia
1
Salem Alsuhaymi 120008898
1) Define null hypothesis.
Null hypothesis, denoted by
Assignment #4
Dr. Goel
H 0 , and usually the hypothesis that sample
observations lead purely chance.
2) Theoretical statistics often model pivotal variables. Define a pivot
Chapter 2
Epidemiologic Measures
Epidemiologic Measures
Clinical Background
Growth factors
Stimulates the patients ability to produce
replacement neutrophils
Empiric treatment
Selection of regimen of antibiotic treatment on the
basis of likely infecti
What is the Chi-Square Test?
A statistical test for a specific hypothesis where observed data is compared to expected data
2) The Chi-Square Test examines the (_) which essentially states that the difference between
the observed and the expected result is
Chapter 5
Communication
Communication
Communication is essential not only in informing
people about health concerns and in maintaining
important health issues on the agenda.
Communication is the process that takes place if
people or groups interact with
2 Tests: Test of
Independence of Two
Variables
PHC 210: Biostatistics and
Epidemiology
2 Tests
Test of Independence of Two Variables
Example: A USA Today poll collected this data. Is religious service
attendance independent of age?
Given:
PHC 210: Biost
Test Validity
PHC 210: Biostatistics and
Epidemiology
Test Validity
Test Validity
Validity of diagnostic and screening test
Measurements of sensitivity and specificity
Predictive value
Reliability and repeatability
PHC 210: Biostatistics and
Epidemiol
1
Assignment 7 1
Nuha AL Fadhli -130028818
1. What is the Chi-Square Test?
Statistical test specific hypothesis where observed data they are compared to the
expected data .
The Chi-Square Test examines the (null hypothesis) which essentially states that
Assignment 6 1
Nuha AL Fadhli
130028818
Compose a Word document that answers the following questions:
One of the goals of the Obama administration is to ensure all Americans have health insurance. A survey to
determine how many Americans have health ins
Nuha AL fadhli
130028818
Week 4: Statistical Inference - Populations and Samples
1
Compose a Word document that answers the following questions:
The population of a clinical study of Americans with diabetes is considered to be the
collection of blood su
How would you define the Wilcoxon Signed Rank Test?
It allows you to use information from paired replicates to test a null
hypothesis.
How would you define the Mann-Whitney Statistic?
It is a non-parametric test in which two groups or conditions are com
1. Define null hypothesis.
An observation that is based on an unproven theory.
2. Theoretical statistics often model pivotal variables. Define a pivotal variable.
Is a function of statistics and parameters having the same fixed distribution (usually tabul
Why choose biostatistics over statistics for biomedical research?
Collecting, analyzing, and interpreting data are necessary components of biomedical research
and need biostatistics. Doing various statistical tests has been made easy by sophisticated
com
1
Salem Alsuhaymi 120008898
Assignment #5
Dr. Goel
One of the goals of the Obama administration is to ensure all Americans have
health insurance. A survey to determine how many Americans have health
insurance is an example of (_).
binary response
Use the
PHC 210
1
Week Ten
Saudi Electronic University
How would you describe the function of a generalized linear regression model?
allows for response variables that have error distribution models other than a normal
distribution. The GLM generalizes linear reg
Running head: [SHORTENED TITLE UP TO 50 CHARACTERS]
1
WEEK 11 ASSIGNMENT
Saudi Electronic University
How would you define Incidence Rate?
Indidence rate is a measure of the frequency with which a disease occurs in a population
over a period of time.
A doc
Running head: [SHORTENED TITLE UP TO 50 CHARACTERS]
Week 9
Saudi Electronic University
Compose a Word document that answers the following questions:
How would you define the Wilcoxon Signed Rank Test?
Wilcoxon signed Rand Test allows you to use informatio
PHC 210
1
Week Six
Saudi Electronic University
One of the goals of the Obama administration is to ensure all Americans have health
insurance. A survey to determine how many Americans have health insurance is an
example of (Binomial Data).
Use the binomial
PHC 210
1
WEEK 12 ASSIGNMENT
Saudi Electronic University
1. Persons with fever/headache were ten times more likely than others to have serum
evidence of WNV infection. Fever/headache is best described as Risk factor.
2. Among Staten Island residents, 2.5