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STATS296 EXAM 1 QUIZ & ANSWERS
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STATS296 EXAM 1 QUIZ & ANSWERS
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STATS296 EXAM 1 QUIZ & ANSWERS 2024 -2025
State,whether,the,data,are,best,described,as,a,population,or,a,sample.
To,estimate,size,of,trout,in,a,lake,,an,angler,records,the,weight,of,8,trout,he,catches,over,a,weekend.,,AN
S,-,,Sample
State,whether,the,data,are,best,described,as,a,population,or,a,sample.
A,subscription-based,music,website,tracks,its,total,number,of,active,users.,,ANS,-,,Population
The,population,is,the,approximately,28,000,protein-
coding,genes,in,human,DNA.,Each,gene,is,assigned,a,number,(from,1,to,28,000),,and,computer,software,i
s,used,to,randomly,select,100,of,these,numbers,yielding,a,sample,of,
100,genes.
State,whether,or,not,the,sampling,method,described,produces,a,random,sample,from,the,given,populati
on.,,ANS,-,,Random
The,population,is,all,employees,at,a,company.,All,employees,are,emailed,a,link,to,a,survey.
State,whether,or,not,the,sampling,method,described,produces,a,random,sample,from,the,given,populati
on.,,ANS,-,,Not,Random
The,population,is,adults,between,the,ages,of,
18,and,22.,A,sample,of,200,students,is,collected,from,a,local,university,,and,each,student,at,the,universit
y,had,an,equal,chance,of,being,selected,for,the,sample.
State,whether,or,not,the,sampling,method,described,produces,a,random,sample,from,the,given,populati
on,,ANS,-,,Not,Random
, Indicate,whether,we,should,trust,the,results,of,the,following,study.,Is,the,method,of,data,collection,biase
d?
Ask,a,random,sample,of,students,at,the,library,on,a,Friday,night,"How,many,hours,a,week,do,you,study?"
,to,collect,data,to,estimate,the,average,number,of,hours,a,week,that,all,college,students,study.,,ANS,-
,,Biased
Indicate,whether,we,should,trust,the,results,of,the,following,study.,Is,the,method,of,data,collection,biase
d?
Ask,a,random,sample,of,people,in,a,given,school,district,"Excellent,teachers,are,essential,to,the,well-
being,of,children,in,this,community,,and,teachers,truly,deserve,a,salary,raise,this,year.,Do,you,agree?",Us
e,the,results,to,estimate,the,proportion,of,all,people,in,the,school,district,who,support,giving,teachers,a,r
aise.,,ANS,-,,Biased
Indicate,whether,we,should,trust,the,results,of,the,following,study.,Is,the,method,of,data,collection,biase
d?
Take,a,random,sample,of,one,type,of,printer,and,test,each,printer,to,see,how,many,pages,of,text,each,wi
ll,print,before,the,ink,runs,out.,Use,the,average,from,the,sample,to,estimate,how,many,pages,,on,averag
e,,all,printers,of,this,type,will,last,before,the,ink,runs,out.,,ANS,-,,Not,Biased
The,website,fox6now.com,held,an,online,poll,in,June,2015,asking,"What,do,you,think,about,the,concept,
of,having,an,everyday,uniform,for,work,,like,Steve,Jobs,did?",Of,the,people,who,answered,the,question,,
24%,said,they,loved,the,idea,,58%,said,they,hated,the,idea,,and,18%,said,that,they,already,wore,a,unifor
m,to,work.
(a),Are,the,people,who,answered,the,poll,likely,to,be,representative,of,all,adult,workers?
(b),Is,it,reasonable,to,generalize,this,result,and,estimate,that,24%,of,all,adult,workers,would,like,to,wear,
a,uniform,to,work?,,ANS,-,,No,,No
In,a,random,sample,of,3500,Canadian,consumers,,about,
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