Introduction to Statistics and Data Analysis
5th Edition
ISBN: 9781305445963
Author: PECK
Publisher: Cengage
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Chapter 12, Problem 41CR
a.
To determine
Check whether there is any evidence of an association between position and role at 0.01 significance level.
b.
To determine
Explain the assumptions about the manner in which the data were collected must be true for the chi-square test to be an appropriate way to analyze the data.
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In a study, the effects of the mane of a male lion as a signal of quality to mates and rivals was explored. Four life-sized dummies of male lions provided a tool for testing female response to the unfamiliar lions whose manes varied by length (long or short) and color (blonde or dark). The female lions were observed to see whether they approached each of the four life-sized dummies. Complete parts (a) through (e) below.
a. Identify the experimental units. Choose the correct answer below.
The female lions
The male dummies
The mane colors
The mane lengths
Part 2
b. Identify the response variable. Choose the correct answer below.
A.
Whether or not (yes or no) the mane length affected how the female lions reacted to a male dummy.
B.
Whether or not (yes or no) the female lions approached the same dummies.
C.
Whether or not (yes or no) the female lions approached a male dummy.
D.
Whether or not…
The following data give the percentage of women working in five companies in the retail and trade industry. The percentage of management jobs held by women in each company is also shown.
% Working
68
45
73
54
62
% Management
50
22
66
48
34
-select your answer choices-
a. scatter diagram (A, B, C)
b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables?
(positive or negative linear relationship)
c. Many different straight lines can be drawn to provide a (linear, exponential, polynomial, logarithmic) approximation of the relationship between x and y.
The article "Cooperative Hunting in Lions: The Role of the individual" (Behavioral
Ecology and Sociology (1992): 445 454) discusses the different roles taken by lionesses as they
attack and capture prey. The authors were interested in the effect of the position in line as stalking
occurs; an individual lioness may be in the center of the line or on the wing (end of the line) as
they advance toward their prey. In addition to position, the role of the lioness was also considered.
A lioness could initiate a chase (be the first one to charge the prey), or she could participate and
join the chase after it has been initiated. Data from the article is summarized in the accompanying
table. Is there evidence of an association between position and role? Test the hypotheses using
a = 0.05.
Position Initiate Chase Participate in Chase
Center
Wing
28
Role
66
48
41
Chapter 12 Solutions
Introduction to Statistics and Data Analysis
Ch. 12.1 - A particular cell phone case is available in a...Ch. 12.1 - From the given information in each case below, use...Ch. 12.1 - Prob. 3ECh. 12.1 - The article “In Bronx, Hitting Home Runs Is A...Ch. 12.1 - Prob. 5ECh. 12.1 - The paper Sociochemosensory and Emotional...Ch. 12.1 - Prob. 7ECh. 12.1 - Prob. 8ECh. 12.1 - The report “Fatality Facts 2004: Bicycles”...Ch. 12.1 - Prob. 10E
Ch. 12.1 - Prob. 11ECh. 12.1 - A certain genetic characteristic of a particulai...Ch. 12.1 - Prob. 13ECh. 12.2 - A particular state university system has six...Ch. 12.2 - A random sample of 1000 registered voters in a...Ch. 12.2 - Prob. 16ECh. 12.2 - Prob. 17ECh. 12.2 - Prob. 18ECh. 12.2 - Prob. 19ECh. 12.2 - Prob. 20ECh. 12.2 - Prob. 21ECh. 12.2 - Prob. 22ECh. 12.2 - Prob. 23ECh. 12.2 - Prob. 24ECh. 12.2 - Prob. 25ECh. 12.2 - Prob. 26ECh. 12.2 - Prob. 27ECh. 12.2 - Prob. 28ECh. 12.3 - Prob. 29ECh. 12.3 - Prob. 30ECh. 12.3 - Can people tell the difference between a female...Ch. 12.3 - The following passage is from the paper Gender...Ch. 12.3 - The article titled Nap Time...Ch. 12.3 - Using data from a national survey, the authors of...Ch. 12 - Each observation in a random sample of 100 bicycle...Ch. 12 - The color vision of birds plays a role in their...Ch. 12 - Prob. 37CRCh. 12 - Prob. 38CRCh. 12 - Prob. 39CRCh. 12 - Prob. 40CRCh. 12 - Prob. 41CRCh. 12 - Prob. 42CRCh. 12 - Prob. 43CRCh. 12 - Prob. 44CR
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