PROBABILITY AND STATISTICS FOR ENGINEERING AND THE SCIENCES 9TH EDITION
BY JAY L. DEVORE
TEST BANK WITH COMPLETE SOLUTIONS
9TH EDITION
, CHAPTER 1 – OVERVIEW AND DESCRIPTIVE STATISTICS ___________________________________4
SHORT ANSWER _____________________________________________________________________________________ 4
CHAPTER 2 - PROBABILITY ______________________________________________________________ 12
SHORT ANSWER ____________________________________________________________________________________ 12
CHAPTER 3 - DISCRETE RANDOM VARIABLES AND PROBABILITY DISTRIBUTIONS _______ 24
SHORT ANSWER ____________________________________________________________________________________ 24
CHAPTER 4 - CONTINUOUS RANDOM VARIABLES AND PROBABILITY DISTRIBUTIONS ____ 38
SHORT ANSWER ____________________________________________________________________________________ 38
CHAPTER 5 - JOINT PROBABILITY DISTRIBUTIONS AND RANDOM SAMPLES _____________ 51
SHORT ANSWER ____________________________________________________________________________________ 51
CHAPTER 6 – POINT ESTIMATION _______________________________________________________ 63
COMPLETION _______________________________________________________________________________________ 63
MULTIPLE CHOICE __________________________________________________________________________________ 67
ESSAY _____________________________________________________________________________________________ 73
CHAPTER 7 - STATISTICAL INTERVALS BASED ON A SINGLE SAMPLE _____________________ 77
COMPLETION _______________________________________________________________________________________ 77
MULTIPLE CHOICE __________________________________________________________________________________ 82
SECTION 7.2 _______________________________________________________________________ 84
SHORT ANSWER ____________________________________________________________________________________ 90
CHAPTER 8 TESTS OF HYPOTHESES BASED ON A SINGLE SAMPLE _______________________ 100
COMPLETION ______________________________________________________________________________________ 100
MULTIPLE CHOICE _________________________________________________________________________________ 109
ESSAY ____________________________________________________________________________________________ 122
CHAPTER 9 INFERENCES BASED ON TWO SAMPLES ________________________________________ 136
COMPLETION ______________________________________________________________________________________ 136
MULTIPLE CHOICE _________________________________________________________________________________ 143
SHORT ANSWER ___________________________________________________________________________________ 155
CHAPTER 10 THE ANALYSIS OF VARIANCE _______________________________________________ 171
SHORT ANSWER ___________________________________________________________________________________ 171
MULTIPLE CHOICE _________________________________________________________________________________ 177
SHORT ANSWER __________________________________________________________________ 184
CHAPTER 11 MULTIFACTOR ANALYSIS OF VARIANCE _____________________________________ 189
COMPLETION ______________________________________________________________________________________ 189
MULTIPLE CHOICE _________________________________________________________________________________ 196
SHORT ANSWER ___________________________________________________________________________________ 205
CHAPTER 12 SIMPLE LINEAR REGRESSION AND CORRELATION ___________________________ 223
COMPLETION ______________________________________________________________________________________ 223
MULTIPLE CHOICE _________________________________________________________________________________ 233
SHORT ANSWER ___________________________________________________________________________________ 251
CHAPTER 13 NONLINEAR AND MULTIPLE REGRESSION___________________________________ 270
COMPLETION ______________________________________________________________________________________ 270
MULTIPLE CHOICE _________________________________________________________________________________ 276
SHORT ANSWER ___________________________________________________________________________________ 291
CHAPTER 14 GOODNESS-OF-FIT TESTS AND CATEGORICAL DATA ANALYSIS _______________ 318
COMPLETION ______________________________________________________________________________________ 318
MULTIPLE CHOICE _________________________________________________________________________________ 321
, SHORT ANSWER ___________________________________________________________________________________ 327
CHAPTER 15 DISTRIBUTION-FREE PROCEDURES_________________________________________ 342
COMPLETION ______________________________________________________________________________________ 343
MULTIPLE CHOICE _________________________________________________________________________________ 351
SHORT ANSWER ___________________________________________________________________________________ 361
CHAPTER 16 QUALITY CONTROL METHODS ______________________________________________ 373
COMPLETION ______________________________________________________________________________________ 373
MULTIPLE CHOICE _________________________________________________________________________________ 382
SHORT ANSWER ___________________________________________________________________________________ 396
, CHAPTER 1 – OVERVIEW AND DESCRIPTIVE STATISTICS
SHORT ANSWER
1. GIVE ONE POSSIBLE SAMPLE OF SIZE 4 FROM EACH OF THE FOLLOWING POPULATIONS:
a. ALL DAILY NEWSPAPERS PUBLISHED IN THE UNITED STATES
b. ALL COMPANIES LISTED ON THE NEW YORK STOCK EXCHANGE
c. ALL STUDENTS AT YOUR COLLEGE OR UNIVERSITY
d. ALL GRADE POINT AVERAGES OF STUDENTS AT YOUR COLLEGE OR UNIVERSITY
ANS:
a. HOUSTON CHRONICLE, DES MOINES REGISTER, CHICAGO TRIBUNE, WASHINGTON POST
b. CAPITAL ONE, CAMPBELL SOUP, MERRILL LYNCH, PULITZER
c. JOHN ANDERSON, EMILY BLACK, BILL CARTER, KAY DAVIS
d. 2.58. 2.96, 3.51, 3.69
PTS: 1
2. A SOUTHERN STATE UNIVERSITY SYSTEM CONSISTS OF 23 CAMPUSES. AN ADMINISTRATOR WISHES TO MAKE
AN INFERENCE ABOUT THE AVERAGE DISTANCE BETWEEN THE HOMETOWNS OF STUDENTS AND THEIR
CAMPUSES. DESCRIBE AND DISCUSS SEVERAL DIFFERENT SAMPLING METHODS THAT MIGHT BE EMPLOYED.
WOULD THIS BE AN ENUMERATIVE OR AN ANALYTIC STUDY? EXPLAIN YOUR REASONING.
ANS:
ONE COULD TAKE A SIMPLE RANDOM SAMPLE OF STUDENTS FROM ALL STUDENTS IN THE CALIFORNIA STATE
UNIVERSITY SYSTEM AND ASK EACH STUDENT IN THE SAMPLE TO REPORT THE DISTANCE FROM THEIR
HOMETOWN TO CAMPUS. ALTERNATIVELY, THE SAMPLE COULD BE GENERATED BY TAKING A STRATIFIED
RANDOM SAMPLE BY TAKING A SIMPLE RANDOM SAMPLE FROM EACH OF THE 23 CAMPUSES AND AGAIN ASKING
EACH STUDENT IN THE SAMPLE TO REPORT THE DISTANCE FROM THEIR HOMETOWN TO CAMPUS.
CERTAIN PROBLEMS MIGHT ARISE WITH SELF REPORTING OF DISTANCES, SUCH AS RECORDING ERROR OR POOR
RECALL. THIS STUDY IS ENUMERATIVE BECAUSE THERE EXISTS A FINITE, IDENTIFIABLE POPULATION OF OBJECTS
FROM WHICH TO SAMPLE.
PTS: 1
3. A MICHIGAN CITY DIVIDES NATURALLY INTO TEN DISTRICT NEIGHBORHOODS. HOW MIGHT A REAL ESTATE
APPRAISER SELECT A SAMPLE OF SINGLE-FAMILY HOMES THAT COULD BE USED AS A BASIS FOR DEVELOPING
AN EQUATION TO PREDICT APPRAISED VALUE FROM CHARACTERISTICS SUCH AS AGE, SIZE, NUMBER OF
BATHROOMS, AND DISTANCE TO THE NEAREST SCHOOL, AND SO ON? IS THE STUDY ENUMERATIVE OR
ANALYTIC?
ANS:
ONE COULD GENERATE A SIMPLE RANDOM SAMPLE OF ALL SINGLE FAMILY HOMES IN THE CITY OR A STRATIFIED
RANDOM SAMPLE BY TAKING A SIMPLE RANDOM SAMPLE FROM EACH OF THE 10 DISTRICT NEIGHBORHOODS.
FROM EACH OF THE HOMES IN THE SAMPLE THE NECESSARY VARIABLES WOULD BE COLLECTED. THIS WOULD
BE AN ENUMERATIVE STUDY BECAUSE THERE EXISTS A FINITE, IDENTIFIABLE POPULATION OF OBJECTS FROM
WHICH TO SAMPLE.
BY JAY L. DEVORE
TEST BANK WITH COMPLETE SOLUTIONS
9TH EDITION
, CHAPTER 1 – OVERVIEW AND DESCRIPTIVE STATISTICS ___________________________________4
SHORT ANSWER _____________________________________________________________________________________ 4
CHAPTER 2 - PROBABILITY ______________________________________________________________ 12
SHORT ANSWER ____________________________________________________________________________________ 12
CHAPTER 3 - DISCRETE RANDOM VARIABLES AND PROBABILITY DISTRIBUTIONS _______ 24
SHORT ANSWER ____________________________________________________________________________________ 24
CHAPTER 4 - CONTINUOUS RANDOM VARIABLES AND PROBABILITY DISTRIBUTIONS ____ 38
SHORT ANSWER ____________________________________________________________________________________ 38
CHAPTER 5 - JOINT PROBABILITY DISTRIBUTIONS AND RANDOM SAMPLES _____________ 51
SHORT ANSWER ____________________________________________________________________________________ 51
CHAPTER 6 – POINT ESTIMATION _______________________________________________________ 63
COMPLETION _______________________________________________________________________________________ 63
MULTIPLE CHOICE __________________________________________________________________________________ 67
ESSAY _____________________________________________________________________________________________ 73
CHAPTER 7 - STATISTICAL INTERVALS BASED ON A SINGLE SAMPLE _____________________ 77
COMPLETION _______________________________________________________________________________________ 77
MULTIPLE CHOICE __________________________________________________________________________________ 82
SECTION 7.2 _______________________________________________________________________ 84
SHORT ANSWER ____________________________________________________________________________________ 90
CHAPTER 8 TESTS OF HYPOTHESES BASED ON A SINGLE SAMPLE _______________________ 100
COMPLETION ______________________________________________________________________________________ 100
MULTIPLE CHOICE _________________________________________________________________________________ 109
ESSAY ____________________________________________________________________________________________ 122
CHAPTER 9 INFERENCES BASED ON TWO SAMPLES ________________________________________ 136
COMPLETION ______________________________________________________________________________________ 136
MULTIPLE CHOICE _________________________________________________________________________________ 143
SHORT ANSWER ___________________________________________________________________________________ 155
CHAPTER 10 THE ANALYSIS OF VARIANCE _______________________________________________ 171
SHORT ANSWER ___________________________________________________________________________________ 171
MULTIPLE CHOICE _________________________________________________________________________________ 177
SHORT ANSWER __________________________________________________________________ 184
CHAPTER 11 MULTIFACTOR ANALYSIS OF VARIANCE _____________________________________ 189
COMPLETION ______________________________________________________________________________________ 189
MULTIPLE CHOICE _________________________________________________________________________________ 196
SHORT ANSWER ___________________________________________________________________________________ 205
CHAPTER 12 SIMPLE LINEAR REGRESSION AND CORRELATION ___________________________ 223
COMPLETION ______________________________________________________________________________________ 223
MULTIPLE CHOICE _________________________________________________________________________________ 233
SHORT ANSWER ___________________________________________________________________________________ 251
CHAPTER 13 NONLINEAR AND MULTIPLE REGRESSION___________________________________ 270
COMPLETION ______________________________________________________________________________________ 270
MULTIPLE CHOICE _________________________________________________________________________________ 276
SHORT ANSWER ___________________________________________________________________________________ 291
CHAPTER 14 GOODNESS-OF-FIT TESTS AND CATEGORICAL DATA ANALYSIS _______________ 318
COMPLETION ______________________________________________________________________________________ 318
MULTIPLE CHOICE _________________________________________________________________________________ 321
, SHORT ANSWER ___________________________________________________________________________________ 327
CHAPTER 15 DISTRIBUTION-FREE PROCEDURES_________________________________________ 342
COMPLETION ______________________________________________________________________________________ 343
MULTIPLE CHOICE _________________________________________________________________________________ 351
SHORT ANSWER ___________________________________________________________________________________ 361
CHAPTER 16 QUALITY CONTROL METHODS ______________________________________________ 373
COMPLETION ______________________________________________________________________________________ 373
MULTIPLE CHOICE _________________________________________________________________________________ 382
SHORT ANSWER ___________________________________________________________________________________ 396
, CHAPTER 1 – OVERVIEW AND DESCRIPTIVE STATISTICS
SHORT ANSWER
1. GIVE ONE POSSIBLE SAMPLE OF SIZE 4 FROM EACH OF THE FOLLOWING POPULATIONS:
a. ALL DAILY NEWSPAPERS PUBLISHED IN THE UNITED STATES
b. ALL COMPANIES LISTED ON THE NEW YORK STOCK EXCHANGE
c. ALL STUDENTS AT YOUR COLLEGE OR UNIVERSITY
d. ALL GRADE POINT AVERAGES OF STUDENTS AT YOUR COLLEGE OR UNIVERSITY
ANS:
a. HOUSTON CHRONICLE, DES MOINES REGISTER, CHICAGO TRIBUNE, WASHINGTON POST
b. CAPITAL ONE, CAMPBELL SOUP, MERRILL LYNCH, PULITZER
c. JOHN ANDERSON, EMILY BLACK, BILL CARTER, KAY DAVIS
d. 2.58. 2.96, 3.51, 3.69
PTS: 1
2. A SOUTHERN STATE UNIVERSITY SYSTEM CONSISTS OF 23 CAMPUSES. AN ADMINISTRATOR WISHES TO MAKE
AN INFERENCE ABOUT THE AVERAGE DISTANCE BETWEEN THE HOMETOWNS OF STUDENTS AND THEIR
CAMPUSES. DESCRIBE AND DISCUSS SEVERAL DIFFERENT SAMPLING METHODS THAT MIGHT BE EMPLOYED.
WOULD THIS BE AN ENUMERATIVE OR AN ANALYTIC STUDY? EXPLAIN YOUR REASONING.
ANS:
ONE COULD TAKE A SIMPLE RANDOM SAMPLE OF STUDENTS FROM ALL STUDENTS IN THE CALIFORNIA STATE
UNIVERSITY SYSTEM AND ASK EACH STUDENT IN THE SAMPLE TO REPORT THE DISTANCE FROM THEIR
HOMETOWN TO CAMPUS. ALTERNATIVELY, THE SAMPLE COULD BE GENERATED BY TAKING A STRATIFIED
RANDOM SAMPLE BY TAKING A SIMPLE RANDOM SAMPLE FROM EACH OF THE 23 CAMPUSES AND AGAIN ASKING
EACH STUDENT IN THE SAMPLE TO REPORT THE DISTANCE FROM THEIR HOMETOWN TO CAMPUS.
CERTAIN PROBLEMS MIGHT ARISE WITH SELF REPORTING OF DISTANCES, SUCH AS RECORDING ERROR OR POOR
RECALL. THIS STUDY IS ENUMERATIVE BECAUSE THERE EXISTS A FINITE, IDENTIFIABLE POPULATION OF OBJECTS
FROM WHICH TO SAMPLE.
PTS: 1
3. A MICHIGAN CITY DIVIDES NATURALLY INTO TEN DISTRICT NEIGHBORHOODS. HOW MIGHT A REAL ESTATE
APPRAISER SELECT A SAMPLE OF SINGLE-FAMILY HOMES THAT COULD BE USED AS A BASIS FOR DEVELOPING
AN EQUATION TO PREDICT APPRAISED VALUE FROM CHARACTERISTICS SUCH AS AGE, SIZE, NUMBER OF
BATHROOMS, AND DISTANCE TO THE NEAREST SCHOOL, AND SO ON? IS THE STUDY ENUMERATIVE OR
ANALYTIC?
ANS:
ONE COULD GENERATE A SIMPLE RANDOM SAMPLE OF ALL SINGLE FAMILY HOMES IN THE CITY OR A STRATIFIED
RANDOM SAMPLE BY TAKING A SIMPLE RANDOM SAMPLE FROM EACH OF THE 10 DISTRICT NEIGHBORHOODS.
FROM EACH OF THE HOMES IN THE SAMPLE THE NECESSARY VARIABLES WOULD BE COLLECTED. THIS WOULD
BE AN ENUMERATIVE STUDY BECAUSE THERE EXISTS A FINITE, IDENTIFIABLE POPULATION OF OBJECTS FROM
WHICH TO SAMPLE.
