estimate the proportion 95% confidence if (a) she uses a previous estimate of 0.54? (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = (Round up to the nearest integer.) Tiple She wishes the estimate to be

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 6CR
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Question
Table of critical values
Level of Confidence,
(1-a). 100%
90%
95%
99%
Area in Each Tail,
Print
0.05
0.025
0.005
Done
Critical Value, z
1.645
1.96
2.575
X
Transcribed Image Text:Table of critical values Level of Confidence, (1-a). 100% 90% 95% 99% Area in Each Tail, Print 0.05 0.025 0.005 Done Critical Value, z 1.645 1.96 2.575 X
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 0.05 with
95% confidence if
(a) she uses a previous estimate of 0.54?
(b) she does not use any prior estimates?
Click the icon to view the table of critical values.
(a) n =
(Round up to the nearest integer.)
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 0.05 with 95% confidence if (a) she uses a previous estimate of 0.54? (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = (Round up to the nearest integer.)
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