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 95% confidence if (a) she uses a previous estimate of 0.54? (b) she does not use any prior estimates?
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 95% confidence if (a) she uses a previous estimate of 0.54? (b) she does not use any prior estimates?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 31PPS
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Question
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
95%
confidence if(a) she uses a previous estimate of
0.54?
(b) she does not use any prior estimates?
Question content area bottom
Part 1
(a)
n=enter your response here
(Round up to the nearest integer.)![(Ro
Table of critical values
Level of Confidence,
(1 − α)∙100%
95%
Area in Each Tail,
Print
0.05
0.025
(X
2
Done
Critical Value, zę
1.645
1.96
2.575
- X](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47f5a366-bdbc-483a-b97a-c5d86d8e18d4%2Fa2844a83-e3e1-4cdf-b1a8-3712ffc275f8%2Fw3n0lo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(Ro
Table of critical values
Level of Confidence,
(1 − α)∙100%
95%
Area in Each Tail,
Print
0.05
0.025
(X
2
Done
Critical Value, zę
1.645
1.96
2.575
- X
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