CHLH 421 Health Data Analysis Homework
Assignment 07
Due: 5:00pm Wed Mar 30 2016
Note:
This assignment is worth of 40 points
Please type rather than hand-write your answers
1 Task 1 Hypothesis testing
A random sample of 200 inpatients in a hospital has

CHLH 421 Health Data Analysis Homework
Assignment #2
Due: 5:00pm Wed Sep 14 2016
Note: This assignment is worth of 40 points
Please type rather than hand-write your answers
Food Stamp Program Participation
This data consists of 150 randomly selected perso

Task 1: Explore STATA
1. State whether you have successfully installed STATA in your computer: I have
successfully installed STATA onto my computer.
2. State whether you have spent at least 15 minutes in exploring the functionalities of
STATA: I have spen

Assignment#7
Task1ExpectedValues
(Sigmasign)3ontopi=1onbottomofxX1andP1
a. X1XP1+x2xp2+x3=p3
a. =1x.60(60%)+2+30%
b. +3X10%
c. 1.5visitsperyear
Task2PositivePredictiveValue
PPVSensitivityxPrevalence)/(sensitivityxprevalence)+(1Specifity)X(1Prevention)
(.9

CHLH 421 Health Data Analysis
Homework Assignment
Note:
This assignment is worth of 40 points
Please type rather than hand-write your answers
1
Task 1: Relative risk and odds ratio
Imagine that the incidence of gun violence is compared in two cities, on

Palack Mahajan
CHLH 421
Assignment # 8
CHLH 421 Health Data Analysis
Homework Assignment
Note:
This assignment is worth of 40 points
Please type rather than hand-write your answers
1
Task 1: Relative risk and odds ratio
Imagine that the incidence of gun

Mikyle Tapley
Instructor Ruopeng An
Community Health 421
27 October 2015
Assignment 07
1 Task 1 Hypothesis Testing
A random sample of 200 inpatients in a hospital has a mean healthcare expenditure of $2200 and
standard deviation of $500. Use these values

Marvin Johnson
671178459
Mljhnsn4
Assignment 3
1 Task 1 Statistical independence
Based on the data of the above contingency table, are gender and individual preference
for use of a hand statistically independent? Why or why not? (Hint: Event A and event B

Ariana Guzman
UIN: 675345382
Homework 6
March 15, 2017
1a. (73-54)/19 = -1 SD, so approximately 16% of Americans are older than 73 years
old.
1b. 68% between 35 and 73
2a. Z = (60-54)/19 = 0.316
2b. P(age>60) = P(Z>0.316) = 1-.6255 = .3745 = 37.45%
2c. Z

s#
#B#B# 2015#
#D#Z@#
#uA#
#
# 22 Apr 2015
12:12#faminc#cigtax#
#cigprice#bwght#fatheduc#
#motheduc#parity#
#male#white#cigs#
#%9.0g#%12.0g#%8.0g#: The
data in variable, #%9.0g#%12.0g#%8.0g#: The data in variable, #%12.0g#
%8.0g#: The data in variable, ,

Ariana Guzman
UIN: 675345382
Net ID: aguzma39
1 Brain weight an 1 Brain weight and head size
Source: R.J. Gladstone (1905). A Study of the Relations of the Brain to the Size of the Head,
Biometrika, Vol. 4, pp105-123.
As a researcher, you are interested i

Ariana Guzman
UIN: 675345382
NetID: aguzma39
Task 1: Relative risk and odds ratio
1a. Relative risk of gun violence in the city with relaxed gun laws:
(Incidence A/Incidence B) = (50/100,000)/(10/100,000) = 5.00
1b. Relative risk of gun violence in the ci

Ariana Guzman
UIN: 675345382
1 Task 1 Binomial Distribution Function
A biased coin is tossed 6 times. The probability of coming up with tails on any toss is
80%.
Let X denote the number of tails that come up. Calculate:
(1) P(X = 2)
P (x) = (6,2) 8^2 (1-0

Ariana Guzman
UIN: 675345382
Net ID: aguzma39
Task 1
Conclusion:
Marital status is related to labor force participation status.
x^2 = (679=654)^2 / 654 + + (25-4)^4)/4 = 31
Degrees of freedom = (3-1) x (3-1) = 4
There is evidence that strongly supports th

Mikyle Tapley
Instructor Ruopeng An
Community Health 421
21 October 2015
Assignment 06
1 Task 1 68-95-99.7 Rule of Normal Distribution
According to the Behavioral Risk Factor Surveillance Survey 2011 wave, the mean age among
Americans who have activity li

Mikyle Tapley
Instructor Ruopeng An
Community Health 421
6 October 2015
Homework Assignment 05
1 Task 1 Binomial Distribution Function
A biased coin is tossed 6 times. The probability of coming up with tails on any toss is 80%. Let
X denote the number of

Mikyle Tapley
Instructor Ruopeng An
Community Health 421
30 September 2015
Homework Assignment 04
1 Task 1 Diagnostic testing
(1) What is the prevalence of breast cancer in this sample?
Prevalence= 10/1000 -> .01 = 1%
(2) What is the sensitivity of the br

CHLH 421 Health Data Analysis Homework
Assignment #3
Due: 5:00pm Wed Sep 21 2016
Task #1 - Statistical Independence
Fema
le
90
RightHanded
Left-Handed 10
Total
100
Male
Total
180
270
20
200
30
300
Based on the data of the above contingency table, are gend

Alexa Piske
CHLH 421 Health Data Analysis Homework
Assignment #5
Due: 5:00pm Wed Oct 5 2016
Note:
This assignment is worth of 40 points
Please type rather than hand-write your answers
Task #1: Binomial Distribution Function
A biased coin is tossed 6 tim

CHLH 421 Health Data Analysis Homework
Assignment #1
Due: 5:00pm Wed Sep 7 2016
This assignment is worth of 40 points
Please type rather than hand-write your answers
Task 1: Explore STATA
State whether you have successfully installed STATA on your compute

CHLH 421 Health Data Analysis Homework
Assignment #6
Due: 5:00pm Wed Oct 19 2016
Note:
This assignment is worth of 40 points
Please type rather than hand-write your answers
Task #1 68-95-99.7 Rule of Normal Distribution
According to the Behavioral Risk

Alexa Piske
CHLH 421 Health Data Analysis Homework
Assignment #4
Due: 5:00pm Wed Sep 28 2016
Note:
This assignment is worth of 40 points
Please type rather than hand-write your answers
Task #1: Diagnostic Testing
(1)What is the prevalence of breast canc

TASK 1
1. What is the prevalence of breast cancer in this sample?
10/1000 = .01
2. What is the sensitivity of the breast cancer test? (Hint: sensitivity = P(Test + | Breast
cancer +)
9/10 = .9
3. What is the specificity of the breast cancer test? (Hint: s

Homework Assignment 2
Food Stamp Program Participation
This data consists of 150 randomly selected persons from a survey with information on
over 2,000 elderly US citizens, where the response, indicates participation in the U.S.
Food Stamp Program.
Variab