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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 0.03 with 99% confidence if (a) she uses a previous estimate of 0.42? (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.) ...

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 99% confidence if (a) she uses a previous estimate of 0.42? (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.) ...

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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**Research Question on Sample Size Determination for Internet Access Survey** A researcher aims to estimate the proportion of adults with high-speed Internet access with a desired precision. The goal is to ensure the estimate is within 0.03 of the true proportion with 99% confidence. ### Questions: 1. **Using Previous Estimates:** - What sample size should be obtained if the researcher utilizes a prior estimate of 0.42? 2. **Without Prior Estimates:** - What sample size is needed without using any prior estimates? ### Instructions: - Click the icon to access the table of critical values. #### Task: For part (a), calculate and round the required sample size to the nearest integer. Input this value in the provided space. **Controls and Actions:** - **Clear all**: Allows you to clear the input fields. - **Check answer**: Validates your calculated sample size. This exercise is based on concepts from Sullivan: *Fundamentals of Statistics*, 6th Edition.
Transcribed Image Text:**Research Question on Sample Size Determination for Internet Access Survey** A researcher aims to estimate the proportion of adults with high-speed Internet access with a desired precision. The goal is to ensure the estimate is within 0.03 of the true proportion with 99% confidence. ### Questions: 1. **Using Previous Estimates:** - What sample size should be obtained if the researcher utilizes a prior estimate of 0.42? 2. **Without Prior Estimates:** - What sample size is needed without using any prior estimates? ### Instructions: - Click the icon to access the table of critical values. #### Task: For part (a), calculate and round the required sample size to the nearest integer. Input this value in the provided space. **Controls and Actions:** - **Clear all**: Allows you to clear the input fields. - **Check answer**: Validates your calculated sample size. This exercise is based on concepts from Sullivan: *Fundamentals of Statistics*, 6th Edition.
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