7.20 Can People Delay Death? (Graded for Completeness) A new study indicates that elderly people are able to postpone death for a short time to reach an important occasion. The researchers studied deaths from natural causes among 1200 elderly people of Chinese descent in California during six months before and after the Harbor Moon Festival. Thirty-three deaths oc- curred in the week before the Chinese festival, compared with an estimated 50.82 deaths expected in that period. In the week following the festival, 70 deaths occurred, compared with an estimated 52. "The numbers are so significant that is would be unlikely to occur by chance," said one of the researchers. (a) Given the information in the problem, is the x² statistic likely to be relatively large or relatively small? (b) Is the p-value likely to be relatively large or relatively small? (c) In the week before the festival, which is higher: the observed count or the expected count? What does this tell us about the ability of elderly people to delay death?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
7.20 Can People Delay Death? (Graded for Completeness) A new study indicates that
elderly people are able to postpone death for a short time to reach an important occasion. The
researchers studied deaths from natural causes among 1200 elderly people of Chinese descent in
California during six months before and after the Harbor Moon Festival. Thirty-three deaths oc-
curred in the week before the Chinese festival, compared with an estimated 50.82 deaths expected
in that period. In the week following the festival, 70 deaths occurred, compared with an estimated
52. "The numbers are so significant that is would be unlikely to occur by chance," said one of the
researchers.
(a) Given the information in the problem, is the x² statistic likely to be relatively large or
relatively small?
(b) Is the p-value likely to be relatively large or relatively small?
(c) In the week before the festival, which is higher: the observed count or the expected count?
What does this tell us about the ability of elderly people to delay death?
(d) What is the contribution to the x?-statistic for the week before the festival?
(e) In the week after the festival, which is higher: the observed count or the expected count?
What does this tell us about the ability of elder people to delay death?
(f) What is the contribution to the x2-statistic for the week after the festival?
(g) The researchers tell us that in a control group of elderly people in California who are not of
Chinese descent, the same effect was not seen. Why did the researchers also include a control
group?
Transcribed Image Text:7.20 Can People Delay Death? (Graded for Completeness) A new study indicates that elderly people are able to postpone death for a short time to reach an important occasion. The researchers studied deaths from natural causes among 1200 elderly people of Chinese descent in California during six months before and after the Harbor Moon Festival. Thirty-three deaths oc- curred in the week before the Chinese festival, compared with an estimated 50.82 deaths expected in that period. In the week following the festival, 70 deaths occurred, compared with an estimated 52. "The numbers are so significant that is would be unlikely to occur by chance," said one of the researchers. (a) Given the information in the problem, is the x² statistic likely to be relatively large or relatively small? (b) Is the p-value likely to be relatively large or relatively small? (c) In the week before the festival, which is higher: the observed count or the expected count? What does this tell us about the ability of elderly people to delay death? (d) What is the contribution to the x?-statistic for the week before the festival? (e) In the week after the festival, which is higher: the observed count or the expected count? What does this tell us about the ability of elder people to delay death? (f) What is the contribution to the x2-statistic for the week after the festival? (g) The researchers tell us that in a control group of elderly people in California who are not of Chinese descent, the same effect was not seen. Why did the researchers also include a control group?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Proportions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
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