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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 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. C (a) n 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer)

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 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. C (a) n 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer)

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter2: Exponential, Logarithmic, And Trigonometric Functions
Section2.CR: Chapter 2 Review
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Having some trouble, my equation was 0.56(1-0.56)(2.59/0.02)^2

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 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = 1667 (Round up to the nearest integer.) (b) 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 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer.)
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