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Test Bank for Probability and Statistics for Engineering and the Sciences 9th Edition by Jay Devore ISBN-9781305251809 All Chapters Graded A+

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Test Bank for Probability and Statistics for Engineering and the Sciences 9th Edition by Jay Devore ISBN-9781305251809 All Chapters Graded A+

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Page 1 of 290 1

,Test Bank For Probability and Statistics for Engineering and the Sciences 9th Edition
ty ty ty ty ty ty ty ty ty ty ty ty



By Jay L. Devore, Matt Carlton
ty ty ty ty ty ty




Chapter 1 – Overview and Descriptive Statistics
t y t y t y t y t y t y


SHORT t y ANSWER

1. Give t y one t y possible sample of size 4 from each of the following populations:
t y t y t y t y t y t y t y t y t y t y

a. All daily newspapers published in the United States
t y t y t y t y t y t y t y


b. All companies listed on the New York Stock Exchange
t y t y t y t y t y t y t y t y


c. All students at your college or university
t y t y t y t y t y t y


d. All grade point averages of students at your college or university
t y t y t y t y t y t y t y t y t y t y




ANS:

a. Houston Chronicle, Des Moines Register, Chicago Tribune,
t y t y t y t y t y t y t y Washington t y Post
b. Capital One, Campbell Soup, Merrill Lynch, Pulitzer
t y t y t y t y t y t y


c. John Anderson, Emily Black, Bill
t y Carter, Kay Davis t y t y t y t y t y


d. 2.58. 2.96, 3.51, 3.69 t y t y t y




PTS: t y 1

2. A Southern
t y State University system consists of 23 t campuses. An
y administrator t y t y t y t y t y t y t y t y


wishes to make an inference
t y about theaverage
t y distance
t y between the hometowns t y ty t y t y t y t y t y t y t y of
students
t y and their campuses. Describe and discuss several different sampling
t y t y t y t y ty t y t y t y t y

methods that might be employed. Would this be an enumerative or an analytic
t y t y t y t y t y t y t y t y t y t y ty t y t y

study? Explain your
t y t y t y


reasoning.

ANS:
One could take a simple random sample of students from all students in the California
t y t y t y t y t y t y t y t y t y t y t y t y t y t y


State University system
t y andaskt yeach student in the sample to report
ty the t y t y t y t y t y t y t y t y t y


distance
t y from their hometown to campus.
t y t y t y t y t y


Alternatively, the sample could be generated by taking a stratified random sample by
t y t y t y t y t y t y t y t y t y t y t y t y


taking a simple random
t y sample from
t y each of
t y the 23 campuses and tyagain t y t y t y t y t y t y t y t y t y

asking each
t y student in the sample to report the distance from their hometown to
t y t y t y t y t y t y t y ty t y t y t y t y t y


campus.
t y

Certain problems might arise with
t y self reporting of distances, such as recording
t y t y t y t y t y t y t y t y t y t y

error
t or poor recall. This study is enumerative because there exists a finite,
y t y t y t y ty t y t y ty t y t y t y t y t y

identifiable population of objects from which to sample.
t y t y t y t y t y t y t y ty




PTS: t y 1

3. A t y Michigan city divides naturally into ten district neighborhoods. How might a real
t y t y t y t y t y t y t y t y t y t y t y

t y estate appraiser select a sample offsingle-family
t y homes that could be
t y used as a ty t y t y t y t y t y t y t y t y t y

t y basis for developing an
t y equation to predict appraised value from characteristics
t y t y t y t y t y ty t y t y t y

t y such as age, size, number of bathrooms,
t y t y and distance to the nearest school,
t y t y t y t y t y t y t y t y t y ty

t y and so on? Ist the
y study enumerative or
t y analytic? t y t y t y t y t y t y




ANS:
Page 2 of 290

,One could
t y t y generate t y a t y simple t y random t y sample t y of t y all t y single t y family t y homes t y in t y the t y city t y or t y a
stratified
t y




Page 3 of 290

, random sample by taking a simple random sample from each of the 10 district
t y t y ty t y t y t y t y t y t y t y t y t y t y

neighborhoods. From each
t y oft y the homes
ty in the
t y sample t the
y necessary
t y variables t y t y t y t y t y t y

t ywould be collected.
t y t This
y would be an enumerative
t y study
t y because there
t y exists t y ty t y t y t y t y


t ya tfinite,
y identifiable
t y population of objects
t y from which to sample.
t y t y t y t y t y ty




Page 4 of 290

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Publisher: 2015 ISBN: 9781305251809 Edition: Unknown

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