Sta304 Term Test 1
4040
Test ID:
:
40
40
ID st Downl
oader
ID: 8669
Te
0
404 t ID:
Tes
ad
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ad er ID
:
86
69
. Student #:
wn
Last name, first name: wn lo
Do
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ID
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86
69
Test ID:
4040
Do
wn
lo
ad er ID
:
86
69
STA 304H1 F SUMMER 2011, First Test, June 2 (20%)
Duration: 60 min. Allowed: nonprogrammable hand-calculator, aid-sheet, one side, with theoretical formulas only; the test contains 3 pages, + an empty page; please check Te
st
ID
:
40
40
Test
ID:
4040
[25] 1) The number of words in a large book is to be determined by selecting a sample of pages and counting the number of words on those pages.
(a) What is the target population? Explain it in some details. What is the sampling population? (b) What is the frame in this sampling? Does the frame properly cover the population?
Explain.
(c) What is the variable that is measured? Discus possible problems that might appear with the definition of that variable.
(d) What is the parameter which should be estimated?
(e) From a brief investigation it was found that there are about 400-500 words per page.
What is an approximate sample size required to estimate the average number of words per page with a bound on the error of estimation of 10 words, assuming there is a large number of pages in the book?
40
:
40
ID st Te
69
86
:
ID
er
ad
lo
wn
Do
Do wn lo ad Test
er
ID
Tes t ID:
:
86
ID:
4040
69
404
Downloader ID: 8669
40
40
ID
:
:
ID
ID: 4040
Do wn lo ad er
ID
:
86
69
69
st
st
Te
Test
40
40
0
0
404
t ID:
ad e r
ID
:
86
Tes
Do
wn
lo
Solutions:
(a) (5) Target population: All pages in the book that contain some text, except cover pages and title page, maybe contents, and some other pages that contain
Test ID:
:
40
40
ID st Downl
oader
ID: 8669
Te
0
404 t ID:
Tes
ad
lo
ad er ID
:
86
69
. Student #:
wn
Last name, first name: wn lo
Do
Do
er
ID
:
86
69
Test ID:
4040
Do
wn
lo
ad er ID
:
86
69
STA 304H1 F SUMMER 2011, First Test, June 2 (20%)
Duration: 60 min. Allowed: nonprogrammable hand-calculator, aid-sheet, one side, with theoretical formulas only; the test contains 3 pages, + an empty page; please check Te
st
ID
:
40
40
Test
ID:
4040
[25] 1) The number of words in a large book is to be determined by selecting a sample of pages and counting the number of words on those pages.
(a) What is the target population? Explain it in some details. What is the sampling population? (b) What is the frame in this sampling? Does the frame properly cover the population?
Explain.
(c) What is the variable that is measured? Discus possible problems that might appear with the definition of that variable.
(d) What is the parameter which should be estimated?
(e) From a brief investigation it was found that there are about 400-500 words per page.
What is an approximate sample size required to estimate the average number of words per page with a bound on the error of estimation of 10 words, assuming there is a large number of pages in the book?
40
:
40
ID st Te
69
86
:
ID
er
ad
lo
wn
Do
Do wn lo ad Test
er
ID
Tes t ID:
:
86
ID:
4040
69
404
Downloader ID: 8669
40
40
ID
:
:
ID
ID: 4040
Do wn lo ad er
ID
:
86
69
69
st
st
Te
Test
40
40
0
0
404
t ID:
ad e r
ID
:
86
Tes
Do
wn
lo
Solutions:
(a) (5) Target population: All pages in the book that contain some text, except cover pages and title page, maybe contents, and some other pages that contain