In the 19th century, cavalries were still an impoct- ant part of the European military complex. While horses have many wonderful qualities, they can be dangerous beasts, especially if poorly treated. The Prussian army kept track of the number of faal-

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
In the 19th century, cavalries were still an import-
ant part of the European military complex. While
horses have many wonderful qualities, they can be
dangerous beasts, especially if poorly treated. The
Prussian army kept track of the number of fatal-
ities caused by horse kicks to members of 10 of
Transcribed Image Text:In the 19th century, cavalries were still an import- ant part of the European military complex. While horses have many wonderful qualities, they can be dangerous beasts, especially if poorly treated. The Prussian army kept track of the number of fatal- ities caused by horse kicks to members of 10 of
their cavalry regiments over a 20-year time span.
If these fatalities occurred independently and
with equal probability for cach regiment, then the
number of deaths by horse kick per regiment per
year should follow a Poisson distribution. On the
other hand, if some regiments during some years
consisted of particularly bad horsemen, then the
events would not occur with equal probability,
in which case we would expect a frequency dis-
tribution different from the Poisson distribution.
The following table shows the data, expressed as
the number of fatalities per regiiment-year (Bort-
kiewicz 1898).
Number of
deaths (X)
Number of
regiment-years
109
65
22
1.
24
Total
200
a. What is the mean number of deaths from
horse kicks per regiment-year?
b. Test whether a Poisson disuibution fits these
data.
012
Transcribed Image Text:their cavalry regiments over a 20-year time span. If these fatalities occurred independently and with equal probability for cach regiment, then the number of deaths by horse kick per regiment per year should follow a Poisson distribution. On the other hand, if some regiments during some years consisted of particularly bad horsemen, then the events would not occur with equal probability, in which case we would expect a frequency dis- tribution different from the Poisson distribution. The following table shows the data, expressed as the number of fatalities per regiiment-year (Bort- kiewicz 1898). Number of deaths (X) Number of regiment-years 109 65 22 1. 24 Total 200 a. What is the mean number of deaths from horse kicks per regiment-year? b. Test whether a Poisson disuibution fits these data. 012
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Research Design Formulation
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.
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