10th Edition

ISBN: 8220102020252

Author: RITCHEY

Publisher: PEARSON

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A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Textbook Question

Chapter 1.3, Problem 18E

Size of Hunting Parties In the 1960s, the famous researcher Jane Goodall observed that chimpanzees hunt and eat meat as part of their regular diet. Sometimes chimpanzees hunt alone, while other times they form hunting parties. The following table summarizes research on chimpanzee hunting parties, giving the size of the hunting party and the percentage of successful hunts. Source: American Scientist and Mathematics Teacher.

Number of Chimps in Hunting Party	Percentage of Successful Hunts
1	20
2	30
3	28
4	42
5	40
6	58
7	45
8	62
9	65
10	63
12	75
13	75
14	78
15	75
16	82

(a) Plot the data. Do the data points lie in a linear pattern?
(b) Find the correlation coefficient. Combining this with your answer to part (a), does the percentage of successful hunts tend to increase with the size of the hunting party?
(c) Find the equation of the least squares line, and graph it on your scatterplot.

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Chapter 1.3, Problem 17E

Chapter 1.3, Problem 19E

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Chapter 1 Solutions

EBK FINITE MATHEMATICS AND CALCULUS WIT

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Solution Summary: The author analyzes the correlation coefficient and determines whether the percentage of successful hunts increases with the size of the hunting party.

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