A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03 with 90% confidence if (a) she uses a previous estimate of 0.36? (b) she does not use any prior estimates? X Table of critical values Click the icon to view the table of critical values. Area in Each Tail, Critical Value, z Level of Confidence, (1a) 100% (a) n = (Round up to the nearest integer.) 90% 0.05 1645 95% 0.025 1.96 99% 0.005 2.575
A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03 with 90% confidence if (a) she uses a previous estimate of 0.36? (b) she does not use any prior estimates? X Table of critical values Click the icon to view the table of critical values. Area in Each Tail, Critical Value, z Level of Confidence, (1a) 100% (a) n = (Round up to the nearest integer.) 90% 0.05 1645 95% 0.025 1.96 99% 0.005 2.575
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Parts a & b
![A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03
with 90% confidence if
(a) she uses a previous estimate of 0.36?
(b) she does not use any prior estimates?
-
X
Table of critical values
Click the icon to view the table of critical values.
a
Critical Value, z
Level of Confidence,
(1a) 100%
(a) n = (Round up to the nearest integer.)
90%
1645
95%
1.96
99%
2.575
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E
R
%
5
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6
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OU
49
& 7
U
8
hp
a
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Area in Each Tail,
0.05
0.025
0.005
P
Done
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A
eck answer
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11:55 AM
6/17/2022
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Transcribed Image Text:A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03
with 90% confidence if
(a) she uses a previous estimate of 0.36?
(b) she does not use any prior estimates?
-
X
Table of critical values
Click the icon to view the table of critical values.
a
Critical Value, z
Level of Confidence,
(1a) 100%
(a) n = (Round up to the nearest integer.)
90%
1645
95%
1.96
99%
2.575
Help me solve this View an example
Type here to search
E
R
%
5
T
6
Get mor
OU
49
& 7
U
8
hp
a
Print
Area in Each Tail,
0.05
0.025
0.005
P
Done
brt sc
94°F
delete
A
eck answer
3
11:55 AM
6/17/2022
num
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