Homework Help is Here – Start Your Trial Now!
Math
Statistics
The alternative hypothesis is:  H1: CVD and Enrollment Site are dependent. H1: The correlation between CVD and Site is zero. H1: CVD and Enrollment Site are independent. H1: The covariance between CVD and Enrollment Site is negative. H1: The covariance between CVD and Site is zero. H1: The covariance between CVD and Enrollment Site is positive. 1.2 Under independence, calculate the expected number of patients with a family history of CVD, at Hospital 2. 1.3 A necessary condition to perform the hypothesis test is:

The alternative hypothesis is:  H1: CVD and Enrollment Site are dependent. H1: The correlation between CVD and Site is zero. H1: CVD and Enrollment Site are independent. H1: The covariance between CVD and Enrollment Site is negative. H1: The covariance between CVD and Site is zero. H1: The covariance between CVD and Enrollment Site is positive. 1.2 Under independence, calculate the expected number of patients with a family history of CVD, at Hospital 2. 1.3 A necessary condition to perform the hypothesis test is:

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

1.1 The alternative hypothesis is: 

  • H1: CVD and Enrollment Site are dependent.
  • H1: The correlation between CVD and Site is zero.
  • H1: CVD and Enrollment Site are independent.
  • H1: The covariance between CVD and Enrollment Site is negative.
  • H1: The covariance between CVD and Site is zero.
  • H1: The covariance between CVD and Enrollment Site is positive.

1.2 Under independence, calculate the expected number of patients with a family history of CVD, at Hospital 2.

1.3 A necessary condition to perform the hypothesis test is:

  • The observed frequencies must be at least 5.
  • The expected frequencies must be at least 5.
  • The expected frequencies must be at least 30.
  • The cell χ2-values must be at least z0.975=1.96.
  • The row and column totals must be at least 3030.
  • The cell χ2-values must be at least z0.95=1.645.
  • The observed frequencies must be at least 30.
  • The sample size must be at least 30.

1.4 Since the critical value is  - we have sufficient evidence  -    the null hypothesis at α=0.01 level of significance and conclude that there   -   a significant association between family history of CVD and enrollment site. (please fill in dashes)

1.5 

Choose the correct interval for the pp-value:

  • 0<p-value≤0.0050
  • 0.005<p-value≤0.010.
  • 0.01<p-value≤0.0250.
  • 0.025<p-value≤0.050.
  • 0.05<p-value≤0.10.
  • p-value>0.1
A cross-sectional study is conducted to investigate cardiovascular disease (CVD) risk factors among a sample of patients seeking medical care at one of three local hospitals. A total of 800 patients are enrolled. Based on the following data, we would like to determine if there is a significant association between the family history of CVD and the enrollment site. Enrollment Site Family History of CVD Hospital 1 Hospital 2 Hospital 3 Total Yes 38 24 38 100 No 182 126 392 700 Total 220 150 430 800 Given: The value of the test statistic is x? = 11.536. Use a = 0.01 as the level of significance.
Transcribed Image Text:A cross-sectional study is conducted to investigate cardiovascular disease (CVD) risk factors among a sample of patients seeking medical care at one of three local hospitals. A total of 800 patients are enrolled. Based on the following data, we would like to determine if there is a significant association between the family history of CVD and the enrollment site. Enrollment Site Family History of CVD Hospital 1 Hospital 2 Hospital 3 Total Yes 38 24 38 100 No 182 126 392 700 Total 220 150 430 800 Given: The value of the test statistic is x? = 11.536. Use a = 0.01 as the level of significance.
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS